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Spring Songbird Banding Kicks Off this Week plus Beauty in the Brambles Workshops

April 17, 2013 By Communications Team

White-throated Sparrow singing.  Photo by Blake Goll
White-throated Sparrow. Photo by Blake Goll

WAIT! If you’re a subscriber reading this in email format, before reading any further, please click on the title of the post right above in order to view the blog in the glory it was meant to have on the actual blog website.

“Old Sam Peabody, Peabody, Peabody…..Oh Canada, Canada, Canada….”.  However you interpret the angelically melodious song of the White-throated Sparrow, it is undoubtedly one of the sweetest bird songs to grace our ears.  Unfortunately, these remaining precious songsters will soon be back in Canada and New England where they breed.  The replacements for the White-throats and the Dark-eyed Juncos are quickly flooding through our area, inundating us with a flurry of new colors, songs and activity.

Spring is an exciting time already, aside from the return of the birds:  spring peepers are cheerily chirping away and the dreamy whirring of toads fills the night air with vernal euphoria, salamanders are bustling about the forest floor on wet nights, cherry blossoms and red maple buds are bursting open, and spring beauties and other enchanting woodland wildflowers are taking advantage of the light before leafout.

Red-backed Salamander with eggs.  Photo by Adrian Binns
Red-backed Salamander with eggs. Photo by Adrian Binns.   Our PA Young Birders were delighted to find sallies like these under logs last month!
Pickerel Frog found by our Young Birders last month.  Photo by Adrian Binns.
Pickerel Frog found by our Young Birders last month. Photo by Adrian Binns.

If spring were a cake though, the birds would be the icing… and what good is a cake without icing?

On Tuesday, April 16th, we once again raised our mist nets to monitor the avian species diversity and abundance  using Rushton Woods Preserve and Farm as a stopover site during migration.  And this is not just any nature preserve and farm; this is both a sustainable farm and a globally significant IBA (Important Bird Area)  coexisting and mutually benefiting each other, while demonstrating the benefits of low impact land management techniques on bird populations.  Learn more about the farm and stay up to date on both the feathers and the food it supports by following The Wild Carrot, Rushton Farm’s brand new blog!!

Rushton Farm
Rushton Farm

You are invited to observe our bird banding program every Tuesday and Thursday morning from April 18-May 21.

We open the mistnets at 6am and close them at 11am, so you are welcome to come visit us at Rushton anytime within those hours.  The earlier hours usually produce the most birds because that’s when they tend to be most active, feeding and refueling from their night’s journey.  Note: we do not band if it rains.

(Rushton Woods Preserve is at the corner of Goshen and Delchester Roads in Newtown Square, PA with the entrance on Delchester Road opposite 912 Delchester Road, Newtown Square PA 19073.)

Intern, Todd Alleger, banding a sparrow.  Photo by Justin Thompson
Intern, Todd Alleger, banding a sparrow. Photo by Justin Thompson
Tree Swallow at Rushton.
Tree Swallow at Rushton.  Photo by Fred de Long.

The office air is getting stale and we are excited to get back in the field amongst the birds and the land!  The handsome Tree Swallows arrived at the farm a couple of weeks ago in their tuxedos and are beginning to claim their real estate (and their women!).  The bluebird guys are stunning the lady blues with their breathtaking plumage and lovely, stammering songs. Brilliant red Northern Cardinal males are enjoying this time before the leafout when they can sit on conspicuous,  still bare branches and sing their hearts out to their mates.

Tree Swallow.  Photo by Adrian Binns.
Tree Swallow. Photo by Adrian Binns.
Northern Cardinal.  Photo by Justin Thompson
Northern Cardinal. Photo by Justin Thompson

Purple Martin scouts have returned to the Willistown area from South America and will continue arriving in the coming weeks.   Northbound flocks of Palm and Yellow-rumped Warblers are moving through along with some Pine Warblers, kinglets and even Hermit Thrush.  Purple Finches are showing up at bird feeders around the area, so be sure to look twice at the birds you think are House Finches.  Eastern Phoebes are investigating houses, porch lights, bridges and other man made structures on which to build their nests.  Eastern Towhees are noisily scratching around the leaf litter looking for seeds, berries, spiders, insects and snails and telling us, “Drink you Teea!!”

Some early birds have been busy for awhile now: Great Horned Owl chicks in the area are leaving their nests, and Black Vulture chicks will be hatching soon!

Great Horned Owl chicks in Villanova.  Photo by Adrian Binns
Great Horned Owl chicks in Villanova. Photo by Adrian Binns
Great Horned Owl mama in Villanova.  Photo by Adrian Binns.
Great Horned Owl mama in Villanova. Photo by Adrian Binns.
Black Vultures nesting in old barn.  Photo by Fred de Long.
Black Vultures nesting in old barn. Photo by Fred de Long.

Other migratory birds are still on their way:  House Wrens, Baltimore Orioles, Scarlet Tanagers, Wood Thrush, Ovenbirds, Catbirds, Indigo Buntings and bushels of warblers galore!  As we move deeper into spring migration, remember to help us document the new arriving bird species on our “Bird Species Seen in 2013″ checklist, which is located on our website here. Last year,  170 species were reported in the Willistown area.  Help us beat last year’s total!

Oh and get your hummingbird feeders back out (if you ever put them away) because they are zooming over the Gulf of Mexico as we speak!

Ruby-throated Hummingbird.  Photo by Steven Kersting
Ruby-throated Hummingbird. Photo by Steven Kersting . Check out his flickr site for more awesome bird pics!

There are even still some reports of Western hummingbirds, like Rufous, in the state.  This past fall/winter was a record with over 90 Western hummers reported in Pennsylvania, one of which was right here in Devon, PA.  These hummingbirds are evolving new migration routes by passing on a genetic defect that causes them to want to migrate east instead of south for the winter.  With the relatively mild winters we now have and the help of birders keeping their hummer feeders up all winter, these “defective” Western hummers can make it through the winter in the East and then go back to the West to make more “defective” hummers.  Specially certified banders have been banding these vagrant hummingbirds to learn more about this phenomenon.  Watch this Audubon at Home video to witness the banding of an Allen’s Hummingbird in suburban Philadelphia, November 2012.

Northern Saw-whet Owl.  Photo by Matt Kesling
Northern Saw-whet Owl. Photo by Matt Kesling

Northern Saw-whet Owl Banding – 2012 Season Summary

Last Fall was not only a record for Western hummingbirds in PA but also for southbound Northern Saw-whet Owls.  We banded 263 new saw-whet owls in 7 weeks of banding from October through November plus recaptured 42 owls that were already banded (called retraps), including our own owls and 9 “foreign” owls (originally banded by other stations).  Unlike the Western hummers in PA, these little migratory owls were not “defective”;  they were simply doing what they are supposed to do, in larger numbers than usual!  Saw-whet owls breed in high elevation coniferous forests in the Appalachian mountains, the mountains of the Western U.S. and throughout Canada and Alaska.  In the fall they migrate through our area (with some overwintering) and can travel as far south as Alabama.

Saw-whet Owl.  Photo by Adrian Binns.
Saw-whet Owl. Photo by Adrian Binns.

The reason there were so many more saw-whets in 2012 as compared to previous years (we banded 34 owls in 2011 and 91 in 2010) is because it was an atypical irruption year.  It was a productive summer in the north for the pine trees, which produced many seeds, which in turn supported a healthy rodent population.  This set the stage for the production of huge numbers of baby saw-whets, which then got kicked out at the end of the breeding season and were forced to flood south for the winter, a time of food scarcity in the north.  About 90% of the owls we banded were hatching year owls (owls born that summer).  About 70% of the total catch were females, which is presumably because the adult males prefer to stick out the winter on their northern territories that they worked so hard to establish.

Very young Saw-whet Owl with juvenile coloring.  Photo by Blake Goll.
Very young Saw-whet Owl with juvenal coloring. Photo by Blake Goll.

We had several notable discoveries during our 2012 season of owls.  One foreign bird that graced our nets was a female banded at Drumlin Farm in Massachusetts in October of 2007!  A 5 year old owl is big news, since we mostly get only young owls.  One hatching year owl traveled 65 miles north to us from a banding station in Chestertown, Maryland in 4 nights….I guess it back-tracked when it heard about the five-star organic mouse buffet, called Rushton, that it missed on its way down the flyway!

Rushton Woods Preserve Saw-Whet Recoveries Map 2012
Rushton Woods Preserve Saw-Whet Owl Recoveries Map from Fall 2012 Season.  Click on it to see it closer.

Some of our owls ended up at other banding stations as well.  One female that we banded as a second year bird in November 2010 showed up this year near Blue Mountain!  Another of our banded owls was retrapped at Lake Ontario, Canada, and we’ve exchanged many owls with Scott Weidensaul’s multiple stations north of us in PA.  To learn more about the fascinating world of saw-whet owls and saw-whet owl banding, a MUST READ article is Dark Moon Traveler in Natural History.

Beauty in the Brambles Workshops

Successional Shrub Habitat is the “in between habitat” that exists before a meadow becomes a woodland. Composed primarily of shrubs, these important habitats are threatened in Southeastern PA because many landowners clear these areas, seeking a more suburban manicured look.  Our workshops are meant to help people understand and consider the ecological value of these habitats for birds and other wildlife and learn to see the unconventional beauty these places hold.

Successional Shrub Habitat at Ashbridge Preserve.
Successional Shrub Habitat at Ashbridge Preserve.

During these educational workshops, we’ll discuss the value of shrub habitats to birds, explore options for management on preserves and your own property, and see some of the bird species that depend on this special habitat.   These workshops will be held by Audubon Pennsylvania, Valley Forge Audubon Society and the Willistown Conservation Trust  at preserves within our program area where Successional Shrub Habitat models have been established.

Cedar Waxwing eating Hawthorn berry.  Photo by Ann Pettigrew
Cedar Waxwing eating Hawthorn berry. Photo by Ann Pettigrew

We  hope our efforts will help landowners, property managers, landscapers and the general public consider the “Beauty in the Brambles” when faced with decisions to clear  habitat.  Why not simply leave it (or at least part of it) alone and enjoy the life it supports?   We have enough to clean inside our houses…why spend energy and money tidying up every single inch of our properties to resemble biologically barren lawns when habitat loss is the leading cause of decreased biodiversity today.  As the human population continues to take over the earth, it’s becoming more urgent that we become more considerate stewards of the land and better neighbors to our fellow creatures.

We’re not asking people to get rid of their lawns completely, but rather to consider saving (or even creating) a corner or two filled with wonderful shrubs for the birds!  Remember when all of the habitat is gone and there are no birds left, spring will be a very sad and lifeless cake with not a speck of icing!

We have already lost half of the songbirds that filled the sky just 40 years ago, according to Bridget Stutchbury in her new book, “Silence of the Songbirds”.

tufted-titmouse-BINNS-IMG_2421-copy

If you haven’t already, please read more about our “Beauty in the Brambles”  Successional Shrub Habitat initiative for the birds in my past blog post called “WCT Gives Thanks for a National Grant from Audubon and Toyota.”

You can also learn more about the importance of this bold new habitat initiative by checking out our  enlightening “Beauty in the Brambles” brochure, which is available to thumb through electronically on the Audubon and Toyota TogetherGreen blog!

Hope to see you at one of our workshops! They’re short and fun plus you’ll get free food, new knowledge and a native shrub that birds love!

WCT Rushton Birds are NOW TWEETING!

Follow the Rushton Banding Station on Twitter to receive instant news live from the field at Rushton Woods Preserve and Farm.  I’ll let you know how the mornings are going,  if significant numbers of birds are hopping into our nets, and if we are banding significant or uncommon species, like Connecticut Warblers.  If you already have a Twitter account, simply search for “WCT Rushton Birds” and click “Follow.”  If you don’t have a Twitter account, go to Twitter.com and set one up today by choosing a username and password.

Enjoy the spring!  There’s a lot going on in the woods…

Blake

Filed Under: Bird Banding, Owls Tagged With: Owl banding, Rushton Farm, Saw-whet owl, songbird banding, successional shrub habitat, Together Green

Songbird Banding Comes to a Close and Saw-whet Owl Movement is Sluggish

November 17, 2011 By Communications Team

Migrant shorebirds at the Delaware Bay (Redknots, Ruddy Turnstone, Sanderling, Dunlin). By Blake Goll

“These were, perhaps, the original poetry…

…in tune with the lift and fall of the seasons,

returning from nowhere,

or from  an unknown terrain

which must consequently exist….

…They needed, for no obvious reason, two worlds

in which to feed and breed,

so they needed a capacity for sustained flight,

a fine orientation,

an ability to sleep on the wing

an instinct for form and its rhythms

as each took its turn to cut the wind.”

-Adapted from “First Poetry”, by Moya Cannon, a lovely Irish poet who visited our Rushton banding station this year.

Dark-eyed Junco
Dark-eyed Junco (Picture from Cornell Lab of Ornithology All About Birds website).

Well folks, it’s about that time…time to admit that the thrilling movement of fall songbird migrants is coming to a close as Old Man Winter looms closer.  Last week, our nets produced very few birds (around 30 each day), the majority of species being White-throated Sparrows and Dark-eyed Juncos here to stay for the winter.  We also banded many year-round residents like Blue Jays, Northern Cardinals, Carolina Chickadees, and Tufted Titmice.  As usual, these classics were crowd-pleasers, especially for the 15  Girl Scouts who came out to Rushton Woods Preserve last Tuesday to learn about birds and earn their honorary Wildlife Badges!  The 4th grade girls eagerly learned how to use binoculars, practiced identifying birds by sight and sound, studied the intricate structure of bird feathers, and kept nature journals of their avian field sketches.  They were quite the little naturalists!

Girl Scouts at Rushton
Girl Scouts at Rushton
Blue Jay
Blue Jay at Rushton Woods Preserve.

Of most interest last week, in terms of the songbird catch, were a lovely Fox Sparrow and a dashing Red-bellied Woodpecker.  The Red-bellied Woodpecker was “nothing special to us”, but our guest bird bander, Emily Thomas, from the Allegheny National Forest of PA was absolutely ecstatic when she heard he was in the net!  She sprinted to the net so fast, she said she pulled a muscle!  The Red-bellied was one of the few birds she had not seen in the hand in her 7 years of banding because they are not common farther north and in higher elevations, like the Appalachian Mountains.  Click here to see the range of our Red-bellied Woodpecker.   Never take our common beauties for granted; what is common to us might be extraordinary for someone else!  I, myself, remember longing for the familiar Northern Cardinals when I was bird banding in the Pacific Northwest two summers ago.

Red-bellied Woodpecker BINNS IMG_7518 copy
Red-bellied Woodpecker by Adrian Binns.

Emily Thomas was visiting our neck of the woods to speak at The Delaware Valley Ornithological Club (DVOC) and The Birding Club of Delaware County (BCDC) about her interesting graduate research on the effects of oil and gas development on songbird habitat and communities.  By the way, both of these prestigious bird clubs are welcoming communities in which to become involved if you are an avid birder, want to cultivate your beginner birding skills or want to make new birding buddies!  Both clubs hold interesting birding field trips and have monthly meetings and frequent distinguished speakers.

Marcellus Shale Drilling Tower
Marcellus Shale Drilling Tower. (Picture from Wikipedia)

In a nut shell, what Emily found from her research is that the habitat fragmentation in the Allegheny National Forest from Devonian shale shallow wells actually increases bird species richness (the number of different species).  This is because forest clearings from well pads and service roads allow more understory and small-gap loving species (like Indigo Buntings and Cedar Waxwings, respectively) to move in alongside some of the remaining closed canopy nesters (like Blackburnian Warblers) that were there before.  However, such fragmentation does result in the loss of  some  specialist species (ie. closed canopy nesters like Magnolia Warblers) that are unique to that Northern hardwood habitat.  A lot of the new species that move in after oil and gas development are generalists like American Robins.  In the end, Emily projected her Devonian shale conclusions on Marcellus shale, predicting that the effects of Marcellus fragmentation will actually be less because one deep Marcellus shale well pad can access resources that would require many shallow Devonian pads.  However, the habitat footprint for a given Marcellus well pad will be larger than that of any individual shallow Devonian well.  It’s all very complicated!  For more information on oil and gas development in PA go to http://extension.psu.edu/naturalgas or  http://www.dep.state.pa.us/dep/deputate/minres/oilgas/oilgas.htm .

Female & Male Magnolia Warblers at Powdermill. By Blake Goll
Female & Male Magnolia Warblers at Powdermill. By Blake Goll. Magnolia Warblers breed in Northern hardwood forests.

Did you know that baby ticks are out and about?  I didn’t even know what a baby tick looked like until last week when we saw little orange bumps on some of our birds, around their eyes and in their ears!  Since we did not get a picture of the ticks, go to Hilton Pond’s website and scroll down for a nice (or not so nice!) view of a cluster of ticks under a jay’s eye.  We found these exact same clusters on our Blue Jay’s eye as well as in the ear of other species like White-throated Sparrows.  Apparentl,  they are called seed ticks and will go through several more stages of development before reaching maturity.  Yuck!

Debbie Beer & her sister, Rebecca, bonding over a Saw-whet.
Debbie Beer & her sister, Rebecca, bonding over a Saw-whet.

As for the Northern Saw-whet Owls (NSWO), we are getting shut out left and right.  Last year, we banded a total of 24 nights for 91 NSWO.  This past Saturday (11/12) was our 24th night this year, and we’re still at only 34 NSWO plus 2 Eastern Screech Owls.  As of November 10th, Scott Weidensaul was at 86 owls across his 3 sites (compared to 336 last year to date), which is well below his 10-year average for the date of 187.   All of these warm, moonlit nights with South winds are not great for Saw-whet movement.  Other owl banding stations, like the Ned Smith Center for Nature and Art, find this trend to be true as well; north winds generate more southbound owl movement.  In fact, some other owl banders have been speculating that the role of wind direction in local movements of these tiny owls  is significant enough to conclude that they are not a truly migratory species, but rather a somewhat nomadic species with opportunistic migration.  It’s never black and white in nature, which is what makes banding so interesting and exciting!

sawwhet BINNS IMG_1905 copy
Northern Saw-whet Owl by Adrian Binns.

On a related note, the big news last week was our nomad number 0904-08744, which found one of Scott Weidensaul’s (famous author and naturalist) nets at Hidden Valley on November 6 after having been banded by us at Rushton on Halloween.  I guess Scott’s Valley isn’t so hidden after all!  The Saw-whet Owl was a Hatching Year female (born this summer).   This recapture shows that she wandered about 60 miles Northwest to Hidden Valley from Rushton in 6 nights.  This same northbound wandering during migration occured last year when another Saw-whet we banded on November 9 was captured 5 nights later, on November 14th,  at another one of Scott Weidensaul’s owl banding stations called Small Valley (in the same general vicinity of Hidden Valley).  That’s two documented cases of northward wanderings at the tail end of “southbound  migration”!  This record is  also remarkable because Scott encouraged the creation of our owl banding station when Lisa Kiziuk volunteered at Hidden Valley in the 2009 season.   Talk about a full circle!  Check out the Ned Smith Center’s Owl Research page for more information on Saw-whet Owl research.

Young Ruby-throated Hummingbird
Young Ruby-throated Hummingbird. By Blake Goll

While we are on the topic of Scott Weidensaul’s research, did you know that you should be keeping at least one hummer feeder filled and available at least through Thanksgiving?   If you’ve put away your feeder already, consider putting it back up and you might get a western vagrant!  Scott is one of only about 200 hummingbird banders in the country studying newly evolving migration routes of western hummingbirds.

rufous hummer
Rufous Hummingbird (derived from Google Images)

Traditionally, only the Ruby-throated Hummingbird was found east of the Great Plains, departing in September and wintering in the tropics. However, in recent years, almost a dozen species of western hummingbirds have been showing up in the East and Southeast in autumn and winter (including Eastern PA!).  Hummingbird banders studying this emerging phenomenon are finding that  most of these vagabonds are Rufous Hummers that breed in the Rockies, Alaska, and the Pacific Northwest and typically winter in Mexico.  However, changes in the landscape coupled with the warmer winters of the past century have made the east hospitable; those that survive and return to breeding grounds are passing on these “vagrant” genes that were once unfavorable, resulting in this  rapid evolution of a new migratory route and wintering area for these birds.

Most homeowners take down their feeders when the last Rubys leave in September, but these Westerners don’t appear until October, November, or even December. Put that feeder back up if you want a chance at an early little Christmas gift wrapped in iridescent feathers! After Oct 15th, you should contact Scott Weidensaul scottweidensaul@verizon.net  if you are sure you have an overwintering western hummingbird.  He or a fellow bander will come to your home, capture and band the bird, and release it to continue migration.  The results can be spectacular!  For example,  in January  2010 a Rufous was banded in Tallahassee, FL and was recaptured 6 months later in Chenega Bay, Alaska! This information is vital to understanding how these migration routes are evolving.

Winter in Willistown
Winter in Willistown

Most people find it astonishing that hummingbirds can survive cold winter weather.  Western hummers are actually very hardy  because they are accustomed to nesting near timber line at high elevations where they can tolerate sub-zero temperatures if need be.  These amazing birds can go into deep hibernation-like torpor on cold nights (rubys can only do this to a small extent) during which their body temperature is reduced from 102 F to just 54 F!  As for finding enough to eat in cold weather, hummers can find dormant insects and  spiders or cold weather active midges.  The birds have also been known to drink tree sap from sapsucker wells!  Visit Scott’s website to learn more about this fascinating western hummingbird research.

saw whet talons BIUNNS IMG_5206 copy
Feisty Saw-whet's Talons by Adrian Binns.

Schedule for the Rest of the Banding Season:  Songbird banding is closed for the season, and this Friday and Saturday will be our next owl banding nights.  As always, please sign up with Lisa Kiziuk, lkr@wctrust.org, to reserve an owl banding spot!  We have not had a good night since November 5th, when we got 7 owls.  Since then, we have only been getting one, two, or no owls each night.   We’ve also been getting the same owls that we banded several nights before, like Feisty 54.   We captured Feisty 54 four times so far this season: first on November 2 and twice in one night on November 11!  This ferocious older female may still be haunting Rushton because, although we aren’t catching any owls these nights, we keep hearing Saw-whet calls that we suspect are coming from Feisty 54.  Maybe she scared everyone else away!  In any case, we are hoping for a few more owls before we shut down for the season (many northern stations have already closed).  Even if we don’t get any new owls for audiences this weekend, there is a good chance of recapturing good old Feisty 54!  I think she is starting to enjoy the attention.  And I’ve also noticed that the human camaraderie is at its best on owl-less nights.

Never a dull moment here in the woods,

~Blake

P.S.  The last PA Young Birder meeting on November 4th was a big success… with over 50 kids of all ages and no owls!  Luckily, there were so many other fun activities going on (owl art, campfire and s’mores, night hikes, owl seek and find, and owl slideshows) that I don’t think the kids remembered that we were even trying to catch owls!

pumpkin sawwhet BINNS IMG_2198 copy
Owl pumpkin carved by Lisa Kiziuk. Photo by Adrian Binns.

The next PA Young Birder Meeting, “My Nest is Best,”  is this Saturday November 19 from 9:30-11am at Rushton Woods Preserve.  The Jr. Birders (ages 8-12) will learn about bird architecture and the many different types of nests that birds construct in various habitats.  The children will assist with nest box installation for the Trust and will hunt for real cavities used by birds in the woods of Rushton.  Please RSVP to Lisa Kiziuk, lkr@wctrust.org.

eastern bluebird m at nestbox BINNS IMG_7837 copy
Eastern Bluebird at nestbox by Adrian Binns

Filed Under: Bird Banding, Bird Events, Owls Tagged With: Bird banding, dark-eyed junco, magnolia warbler, marcellus shale, Ned Smith Center, Northern Saw-whet Owl, oil and gas development, Owl banding, PA Young Birders, rufous hummingbird

Final Fall Fallout of Migratory Songbirds & Our First Saw-whet Owl of the Season!

October 22, 2011 By Communications Team

Nashville Warbler by Adrian Binns
Nashville Warbler at Rushton Woods Preserve by Adrian Binns (Fall 2011)

Last Friday (10-14), we banded 56 birds to the delight of my adult class (age 50+) from Widener’s Osher Lifelong Learning Institute.  After studying birds, bird banding and bird conservation in the classroom, the enthusiastic students came out to Rushton Woods Preserve to experience the banding production in person.  They were thrilled to touch and be so close to these wild feathered beauties and were pleasantly surprised at the diversity of species:  Eastern Phoebe, 5 Palm Warblers, 3 Myrtle Warblers, 1 Common Yellowthroat, 4 Black-throated Blue Warblers, lots of sparrows, 1 Gray-cheeked Thrush, towhee, goldfinch, cardinals, Carolina Wren, and 1 late CATBIRD!

Palm Warbler
Palm Warbler at Rushton by Blake Goll

The net over the compost pile was very busy that day with over 15 birds in the net at once during the mid-morning net check.  Doris was packing 2-3 birds of the same species in each bag (we need more hand-made bird bags if you can sew and want to lend a hand!).  Poor Doris also suffered deep puncture wounds during that same net check from an ungrateful mole or vole that she rescued from the net.  “Don’t get no respect, even from rodents!”, she cried.

This past Tuesday (10-18) was our second big fallout day, probably the last one for this fall.   We banded 93 birds of 20 species, which is 7 birds over Rushton’s previous record of 86!  A Northern Parula Warbler was the best of 6 warbler species, and several Golden-crowned Kinglets were new for this year.  Our loyal volunteers Alice, Lou, and Godefroy extracted non-stop and  kept the birds safe.  Win and Justin helped at the open and went to work saying, “Here are 6 birds.  There are 2 more in #7 and 12 in #6.”   That was 7:45 and we never stopped until after 10.   Doris says, “No bird was held more than 90 minutes, which is long for Rushton, but nothing for the big banding stations which routinely hold birds for longer.”

Golden Crowned Kinglet
Golden Crowned Kinglet (Blake Goll)

Thursday and Friday of this week were slower, with probably more High School kids than birds.  About 100 honors students from Conestoga High School’s Environmental Science class came out to Rushton over the past two days.  They had the chance to visualize and experience concepts they have learned or will learn in the classroom this year by rotating through 3  stations: a woodland ecology walk, tour of the sustainable CSA farm, and bird banding and conservation.  The students were impressed with the common birds we all sometimes take for granted like the handsome American Robin and Northern Cardinal and the charismatic Tufted Titmouse.  The very last catch of the day was a stunning Sharp-shinned Hawk, which the kids got really excited about.  The cell phones immediately came out of pockets and were snapping pictures left and right!  This is probably the same hawk that we have occasionally seen darting in and out of the hedgerows and even dive-bombing Lisa one day as she was closing the nets.  I think the Sharpie was angry that she wasn’t leaving the net up to facilitate his lunch endeavors.

Sharp-shinned hawk- Young female
Young female Sharp-shinned Hawk (by Blake Goll)

As for the Northern Saw-whet Owls (NSWO), we were off to a very slow start.   For the first couple of weeks, we ended up empty-handed every night  except for a red-phase Eastern Screech Owl two Fridays ago  at 8pm and then again at 11pm.  He just couldn’t get enough of our nets, apparently.  Let’s just hope he has learned his lesson and stays away once we really start catching saw-whets (screech owls are a predator of NSWO, believe it or not).

Eastern Screech Owl
Eastern Screech Owl recapture (by Blake Goll)

We don’t know what’s taking the Saw-whets so long, but it may be related to this crazy wet weather we have been having (which seems to have delayed this year’s  songbird migration as well).  There is also some speculation that this year was not a very successful breeding year for the NSWO, and therefore the number of young “Hatching Year” (HY) birds is much lower than last year.  Since most of the owls we band are HY birds, we don’t expect to band as many this year as last. (The older more dominant males tend to prefer to stick out the winter on their northern territories rather than migrating south with the young owls and the females. )

The NSWO is also an irruptive species closely tied to the pine tree seed crop up north.  Last year was an irruption year during which we had more saw-whets coming south than usual because the pine trees did not produce as many seeds as the previous year, which caused the rodent population (owl food) to plummet.  When food up north is scarce, more owls travel south for the winter.  Bird migration is related to food scarcity, not cold weather.  Most birds, even some hummingbirds like the Rufous, are well adapted to dealing with cold weather.

Northern Saw-whet Owl
Our first Northern Saw-whet Owl of the 2011 season (by Blake Goll). She is a Hatch Year female.

You can imagine our delight last night (10-21) when we finally caught our first Northern Saw-whet Owl!!!  It was a cute-as-a-button feisty young female weighing in at about 92 grams.  It was about 9:00 at night when she found her way to our nets while investigating our audio lure that incessantly plays the male’s territorial call.  Everyone was ecstatic, and even men’s voices were raised an octave or two as they ‘ooed’ and ‘aahed’ over the little owl.  As for myself, I was a little intimidated by her mesmerizing yellow eyes that seemed to be boring into my soul from some wild place and “reading my mind”, as one woman said.

Young female Northern Saw-whet Owl
Our young female Northern Saw-whet Owl (by Blake Goll). My, what beautiful eyes she has!
Photogenic Northern Saw-whet Owl
Our very photogenic Northern Saw-whet Owl

Alas, there is hope for this year’s owl banding season! Remember to contact Lisa Kiziuk (lkr@wctrust.org) if you are interested in observing owl banding.  Songbird banding will also continue on Tuesday and Thursday mornings for the next couple of weeks.  No reservation required for songbirds.

And speaking of Lisa, congratulations to her on winning the DVOC (Delaware Valley Ornithological Society) Rosalie Edge Conservation Award for her tireless bird conservation work!  Without her vision, the Willistown Conservation Trust’s banding station at Rushton Woods Preserve would never have become a reality.  Today, the Rushton bird banding station is not only a reality but a wonderful destination where adults and children of all backgrounds experience some of nature’s finest works of living art while learning about the importance of such scientific research in the understanding and ultimate conservation of our nation’s feathered bounty.  Thank you, Lisa, for  making your dream come true and for all you do for the birds.  I know Rosalie Edge would be proud of you.

~Blake

Lisa Kiziuk with Magnolia Warbler
Lisa Kiziuk with Magnolia Warbler
Rosalie Edge
Rosalie Edge (from Google images)

Filed Under: Bird Banding, Bird Events, Owls Tagged With: Bird banding, kinglet, Nashville warbler, Northern Saw-whet Owl, Owl banding, Palm warbler, Sharp-shinned hawk

Final Fall Fallout of Migratory Songbirds & Our First Saw-whet Owl of the Season!

October 22, 2011 By wctbirds

Nashville Warbler by Adrian Binns
Nashville Warbler at Rushton Woods Preserve by Adrian Binns (Fall 2011)

Last Friday (10-14), we banded 56 birds to the delight of my adult class (age 50+) from Widener’s Osher Lifelong Learning Institute.  After studying birds, bird banding and bird conservation in the classroom, the enthusiastic students came out to Rushton Woods Preserve to experience the banding production in person.  They were thrilled to touch and be so close to these wild feathered beauties and were pleasantly surprised at the diversity of species:  Eastern Phoebe, 5 Palm Warblers, 3 Myrtle Warblers, 1 Common Yellowthroat, 4 Black-throated Blue Warblers, lots of sparrows, 1 Gray-cheeked Thrush, towhee, goldfinch, cardinals, Carolina Wren, and 1 late CATBIRD!

Palm Warbler
Palm Warbler at Rushton by Blake Goll

The net over the compost pile was very busy that day with over 15 birds in the net at once during the mid-morning net check.  Doris was packing 2-3 birds of the same species in each bag (we need more hand-made bird bags if you can sew and want to lend a hand!).  Poor Doris also suffered deep puncture wounds during that same net check from an ungrateful mole or vole that she rescued from the net.  “Don’t get no respect, even from rodents!”, she cried.

This past Tuesday (10-18) was our second big fallout day, probably the last one for this fall.   We banded 93 birds of 20 species, which is 7 birds over Rushton’s previous record of 86!  A Northern Parula Warbler was the best of 6 warbler species, and several Golden-crowned Kinglets were new for this year.  Our loyal volunteers Alice, Lou, and Godefroy extracted non-stop and  kept the birds safe.  Win and Justin helped at the open and went to work saying, “Here are 6 birds.  There are 2 more in #7 and 12 in #6.”   That was 7:45 and we never stopped until after 10.   Doris says, “No bird was held more than 90 minutes, which is long for Rushton, but nothing for the big banding stations which routinely hold birds for longer.”

Golden Crowned Kinglet
Golden Crowned Kinglet (Blake Goll)

Thursday and Friday of this week were slower, with probably more High School kids than birds.  About 100 honors students from Conestoga High School’s Environmental Science class came out to Rushton over the past two days.  They had the chance to visualize and experience concepts they have learned or will learn in the classroom this year by rotating through 3  stations: a woodland ecology walk, tour of the sustainable CSA farm, and bird banding and conservation.  The students were impressed with the common birds we all sometimes take for granted like the handsome American Robin and Northern Cardinal and the charismatic Tufted Titmouse.  The very last catch of the day was a stunning Sharp-shinned Hawk, which the kids got really excited about.  The cell phones immediately came out of pockets and were snapping pictures left and right!  This is probably the same hawk that we have occasionally seen darting in and out of the hedgerows and even dive-bombing Lisa one day as she was closing the nets.  I think the Sharpie was angry that she wasn’t leaving the net up to facilitate his lunch endeavors.

Sharp-shinned hawk- Young female
Young female Sharp-shinned Hawk (by Blake Goll)

As for the Northern Saw-whet Owls (NSWO), we were off to a very slow start.   For the first couple of weeks, we ended up empty-handed every night  except for a red-phase Eastern Screech Owl two Fridays ago  at 8pm and then again at 11pm.  He just couldn’t get enough of our nets, apparently.  Let’s just hope he has learned his lesson and stays away once we really start catching saw-whets (screech owls are a predator of NSWO, believe it or not).

Eastern Screech Owl
Eastern Screech Owl recapture (by Blake Goll)

We don’t know what’s taking the Saw-whets so long, but it may be related to this crazy wet weather we have been having (which seems to have delayed this year’s  songbird migration as well).  There is also some speculation that this year was not a very successful breeding year for the NSWO, and therefore the number of young “Hatching Year” (HY) birds is much lower than last year.  Since most of the owls we band are HY birds, we don’t expect to band as many this year as last. (The older more dominant males tend to prefer to stick out the winter on their northern territories rather than migrating south with the young owls and the females. )

The NSWO is also an irruptive species closely tied to the pine tree seed crop up north.  Last year was an irruption year during which we had more saw-whets coming south than usual because the pine trees did not produce as many seeds as the previous year, which caused the rodent population (owl food) to plummet.  When food up north is scarce, more owls travel south for the winter.  Bird migration is related to food scarcity, not cold weather.  Most birds, even some hummingbirds like the Rufous, are well adapted to dealing with cold weather.

Northern Saw-whet Owl
Our first Northern Saw-whet Owl of the 2011 season (by Blake Goll). She is a Hatch Year female.

You can imagine our delight last night (10-21) when we finally caught our first Northern Saw-whet Owl!!!  It was a cute-as-a-button feisty young female weighing in at about 92 grams.  It was about 9:00 at night when she found her way to our nets while investigating our audio lure that incessantly plays the male’s territorial call.  Everyone was ecstatic, and even men’s voices were raised an octave or two as they ‘ooed’ and ‘aahed’ over the little owl.  As for myself, I was a little intimidated by her mesmerizing yellow eyes that seemed to be boring into my soul from some wild place and “reading my mind”, as one woman said.

Young female Northern Saw-whet Owl
Our young female Northern Saw-whet Owl (by Blake Goll). My, what beautiful eyes she has!
Photogenic Northern Saw-whet Owl
Our very photogenic Northern Saw-whet Owl

Alas, there is hope for this year’s owl banding season! Remember to contact Lisa Kiziuk (lkr@wctrust.org) if you are interested in observing owl banding.  Songbird banding will also continue on Tuesday and Thursday mornings for the next couple of weeks.  No reservation required for songbirds.

And speaking of Lisa, congratulations to her on winning the DVOC (Delaware Valley Ornithological Society) Rosalie Edge Conservation Award for her tireless bird conservation work!  Without her vision, the Willistown Conservation Trust’s banding station at Rushton Woods Preserve would never have become a reality.  Today, the Rushton bird banding station is not only a reality but a wonderful destination where adults and children of all backgrounds experience some of nature’s finest works of living art while learning about the importance of such scientific research in the understanding and ultimate conservation of our nation’s feathered bounty.  Thank you, Lisa, for  making your dream come true and for all you do for the birds.  I know Rosalie Edge would be proud of you.

~Blake

Lisa Kiziuk with Magnolia Warbler
Lisa Kiziuk with Magnolia Warbler
Rosalie Edge
Rosalie Edge (from Google images)

Filed Under: Bird Banding, Bird Events, Owls Tagged With: Bird banding, kinglet, Nashville warbler, Northern Saw-whet Owl, Owl banding, Palm warbler, Sharp-shinned hawk

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