Bird Conservation

Resolve to Be a Better Human for Birds (i.e., Earth)

January 10, 2020 By Blake Goll

*Gray-cheeked Thrush banded at Rushton in October 2018. Photo by Blake Goll. This is one of our longest distance migrants, breeding in spruce forests of northern Canada and Alaska.*

This fall, world scientists (11,000 of them to be exact) made a clear and unequivocal declaration in BioScience Magazine that planet Earth is in a climate emergency. The climate crisis is closely linked to excessive consumption of the wealthy lifestyle, and climate tipping points are arriving faster than anticipated. Major change is needed at all levels of society, and “help planet Earth” might be the most important New Year’s resolution to add to your list.

This sounds like a lofty task that could induce Ostrich Syndrome of sticking our heads hopelessly into the sand. Especially since this warning follows the article in Science declaring that we have lost 30% of our birds in the past 50 years. Do not despair: there are many personal changes we can all make in our daily lives, and by focusing on birds we can make the overall problem seem more manageable and the solution more tangible. When we help birds, we help the world.

Following represents a list of ideas to consider, realizing we cannot be perfect. But we can certainly be better.

Reduce Carbon Emissions

While most of us cannot directly reduce subsidies to fossil fuel corporations as the Alliance of World Scientists suggests, we can reduce our carbon emissions personally. Planning a vacation for 2020? Try exploring a place closer to home rather than one that requires global air travel. Buying a new car? Choose brands with low emissions or electric if you can afford it. Look into changing your home energy supplier to renewable energy.

Common Yellowthroat last April at Rushton. Photo by Celeste Sheehan. It was determined to be at least 9 years old (originally banded by us in 2012)! This species is less common in drier areas and suffers from loss of its natural habitat.

Studies show that climate change is playing a role in bird declines. As the planet warms, bird ranges are shifting north often into less ideal habitats. Some neotropical migrant species in particular have been hit hard because their day length-derived arrival dates are now out of snyc with temperature-derived North American insect pulses.

Check out the official climate emergency warning.

*A native wildflower meadow at Willistown Conservation Trust’s headquarters on Providence Road, Newtown Square. Photo by Blake Goll*

Plant a Native Wildflower Garden

With lawns covering over 40 million acres of the U.S., it is paramount that we begin to see these lawns as places where conservation can happen. Devoting part of your manicured lawn to a natural meadow habitat with native grasses and flowers can greatly increase diversity of insects and birds, eliminate the need for pesticides, and reduce the need for watering (most native plants once established can mine groundwater). These native wildflower gardens only require mowing once a year in early spring, thus decreasing carbon emissions associated with repetitive mowing.

*Carolina Chickadee banded at Rushton last spring. Photo by Celeste Sheehan*

Doug Tallamy, author of Bringing Nature Home, proved that chickadees in a suburban neighborhood of mostly lawn and non-native trees and shrubs actually experienced diminished breeding success. Most of the nutrient-rich caterpillars they need to feed their young are located on native plants; Tallamy’s lab suggests that even an imperfect mix of 70% native plants and 30% non-native is enough to bolster healthy populations of breeding birds in our neighborhoods.

Visit the Native Plant Finder to learn which butterflies and moths are supported by different native plant host species in your area.

*White M Hairstreak, a rare butterfly found at the Willistown Conservation Trust’s native wildflower meadow in July. Photo by Celeste Sheehan*

Support Healthy Food Systems

Reducing the global consumption of animal products, especially large livestock, can significantly lower greenhouse gas emissions. Enormous expanses of natural ecosystems are used for growing livestock feed. Eating a plant-based diet not only improves human health but it also frees up cropland for growing human plant food as well as for restoring natural habitats for birds, wildlife, and ecosystem services (e.g., carbon sequestration).

You can also support small farms like Rushton Farm that employ regenerative agriculture. More than simply organic, regenerative agriculture is a conservation and rehabilitation approach to farming and food systems. It’s partnering with nature to regenerate soil with smart crop rotation, increase biodiversity with habitat borders, improve watersheds by eliminating chemical inputs, and enhance ecosystem services like pollination by native bees. Basically, it’s the way farming was done prior to agricultural intensification.

American Goldfinch at Rushton Farm in October. Photo by Celeste Sheehan. Goldfinches are one of the many species that benefit from the habitat created by regenerative farming. We banded a record of 119 goldfinches this fall!

Agricultural intensification has been linked to the worrisome 50% decline in American grassland bird populations since 1970. Worldwide, this sect of birds is dramatically declining in part because of farmland habitat degradation but also because of controversial insecticides previously thought to only affect bees.

A recent study on wild White-crowned Sparrows used Motus tracking technology to understand the detrimental appetite-suppressing effects of these neonicotinoids on migratory birds. Read more about the fascinating study: Insecticides Shown to Threaten Survival of Wild Birds.

*White-crowned Sparrow banded at Rushton November 2018. Photo by Blake Goll*

Buy Shade Grown Coffee

Coffee traditionally grows in harmony with nature in the understory of tropical forests. This means that it is an agricultural product that can actually support a diversity of habitat structure that is perfect for migratory birds that overwinter in the tropics like our beloved Wood Thrush and Baltimore Orioles.

*Wood Thrush banded at Rushton in May. Photo by Blake Goll. For every ten Wood Thrushes, six have been lost since 1970.*

*Baltimore Oriole banded at Rushton last May. Photo by Celeste Sheehan*

Unfortunately, much like the rest of modern agriculture, we have found a way to intensify this crop’s production by clear-cutting forests and growing it in the sun. Full-sun coffee farms make up over 76% of the total coffee cultivation area.

You can support family owned coffee farms that are doing it responsibly and preserving forests by looking for the Bird Friendly certification, a science-based certification that is run by the Smithsonian Migratory Bird Center of the Smithsonian Institution. Bird Friendly requires farmers to plant a diversity of trees, prioritizing native ones that have the highest value (in insects) to birds.

Read more about the intricacies of the relationship between birds, coffee, and global warming: Newfoodeconomy.org.

And then order some Bird Friendly coffee from our friends at Golden Valley Farms Coffee Roasters in West Chester, PA!

Switch to Sustainable Toilet Paper

The boreal forest of Canada has been dramatically affected by America’s love of luxury toilet paper brands that use virgin pulp. The boreal forest covers 60% of Canada, absorbs significant amounts of carbon dioxide from the atmosphere, and has been called the Songbird Nursery of North America as 3 billion birds of over 300 species flock there for breeding each year. An area the size of Pennsylvania has already been wiped out of this majestic forest.

*Magnolia Warbler banded at Rushton in May. Photo by Blake Goll. Primarily an insect eater, this warbler migrates from the tropics to the boreal forest to breed.*

*Northern Saw-whet Owl being banded at Rushton last fall. Photo by Celeste Sheehan. This is another species that depends on the boreal forest.*

There are many toilet paper brands that now use recycled paper and even bamboo, which is still far more sustainable than pulp from trees (and a little softer than recycled paper for those transitioning from pillow soft virgin paper). Who Gives a Crap and Seventh Generation are popular brands to try out.

Keep Cats Indoors

Hundreds of millions of birds die each year from window collisions, but there is another human-induced threat that is even more sinister: cats. American Bird Conservancy states that cats kill approximately 2.4 billion birds each year in the U.S. alone, making them the number one human-caused threat to birds (next to habitat loss). We need those 2.4 billion birds, now more than ever, to help keep insect populations in check, which keeps forests healthy and mitigates global warming.

*Cat-killed House Finch found in September. Photo by Blake Goll*

When allowed to roam outside in natural areas, cats are an alien invasive species that wreak havoc on bird populations that are already stressed due to habitat loss and climate change. When kept inside, cats are loving pets that live longer, healthier lives.

Looking for some interesting reading for 2020? Check out Cat Wars, by Pete Marra, which traces the historical ties between humans and cats and tackles this complex global problem.

*Field Sparrow being released after banding last April. Photo by Blake Goll*

Engage in Political Activism

According to Audubon science, two-thirds of all North American bird species are at risk of extinction without immediate conservation action. Bird conservation legislation can help prevent unnecessary bird mortality. Industry, for example, plays a significant role in bird deaths: annually, tens of millions of birds collide fatally with power lines and communication towers, 500,000 birds mistake open oil waste pits for lakes, and over 1 million birds perish from accidents like the 2010 Deepwater Horizon oil spill.

The current administration has weakened important, long-standing legislation like the Migratory Bird Treaty Act, which held industry responsible for minimizing bird mortality (e.g., keeping covers over oil waste pits). Fortunately, a bi-partisan bill has just been introduced: the Migratory Bird Protection Act (MBPA). This bill will essentially revoke the free pass to incidental bird killing and create a permitting system for businesses to reduce preventable bird mortality.

Your voice can make a difference. Urge your representatives to co-sponsor this important bill on American Bird Conservancy’s action page.

*American Goldfinch banded at Rushton last April. Photo by Blake Goll*

Preclude the Canary’s Swan Song

Birds, long revered as the canary in the coal mine, are chiding us to make some big changes this year. We must work together as fellow inhabitants of this incredible planet to preserve its beauty. There are simply too many of us now for anyone to luxuriate in blissful naivete. The scientists have spoken. The canaries have sung.

Let’s be better humans this year, so that we may never hear the swan song of our canary.

There’s a lot going on in the woods,

Blake

Our 1000th Bird – A Look at the Numbers

October 25, 2019 By Bird Conservation Team

At Rushton we do as the birds do and follow their seasons. Each season is unique in its own way, so when we look at the data, we look at each season independently.

This fall we seem to be catching more birds than we have in the past. This does not contradict the recent reports of bird declines, it simply shows that during this small window of bird migration, over the short time span of 10 years, this is the most we have captured. It’s too soon to know why there are more birds this year; maybe the habitat is just right this year. We changed the habitat slightly by increasing the shrub scrub due to a slightly altered mowing regime. We have also been able to band a little more this fall than in previous years, due to favorable weather. It could also be that we happen to be catching good migration weather, the best winds and on the right days. We have a set schedule of banding the same three days each week, but the birds travel when the weather is right, no matter what day!

A summary of 9 years of fall migration banding at Rushton:

We typically band from the last week in August until the first week in November, three days a week when conditions allow.

This year on October 10th we caught and banded our 1000th bird (a Black-throated Blue Warbler), at about halfway through the season, already surpassing our average total over the last nine years. Noting this great year, we hope this can become a tradition!

Our lowest year is likely due to fewer hours spent catching birds, more fairly, our lowest catch has been 893 birds and our highest in the last nine years was 1082 birds in 2013.

Looking forward, our winter residents and second most common bird of the fall season, the White-throated Sparrow, has yet to arrive, along with our tiniest fall migrant, the Ruby-crowned Kinglet, which combined, average another 200-300 birds, we can only begin to speculate how many birds we will total by November!

Table 1. Number of birds captured per year during fall migration.

Community Supported Avifauna

October 22, 2019 By Blake Goll

Volunteer, Kelly Johnson, in awe of a Blue Jay banded October 10th. Photo by Blake Goll

Rushton Woods Preserve is a place where people gather in celebration of abundance. Community Supported Agriculture (CSA) members gather for their share of the soil’s bounty each week, and myriad groups from the community, schools, and universities gather at the songbird banding station to witness the bounty of the sky. Much like the agricultural harvest, our bird catch follows seasonal patterns that can help a visitor (or bird bander) develop a deep connection to the rhythm set forth by Earth’s 23.5 degree tilt.

View of Rushton Farm in Fall from Fred’s wagon. Photo by Blake Goll

As this was my first year participating in the Rushton Farm CSA, I noticed some interesting correlations between the harvest and the catch. My favorite crisp spring vegetables like kale, radishes, turnips, broccoli, leeks, and little gem lettuces have all made an encore appearance now that the cool fall weather is here. These I liken to our butterflies of the bird world, the “special” warblers, that we can only expect to see during spring and fall migration: Black-throated Blue Warblers, Chestnut-sided Warblers, Magnolia Warblers, Northern Parulas, Black-and-white Warblers, and American Redstarts.

American Redstart banded in September. Photo by Blake Goll
Black-and-white Warbler banded in October. Photo by Celeste Sheehan
Male Chestnut-sided Warbler banded in September. Photo by Blake Goll
Northern Parula banded in September. Photo by Jim Moffett
Black-throated Blue Warbler banded in September. Photo by Jim Moffett

Throughout the summer, I was overwhelmed with tomatoes and zucchini. These prolific crops mirror our common birds that breed at Rushton all summer long like Gray Catbirds and Common Yellowthroats. Catbirds are a bander’s tomatoes making up the bulk of our catch August through September; they even ironically dwindled in numbers at about the same time as the tomato harvest finally ended a couple of weeks ago. And just like the tomatoes, we miss them when they’re gone.

Rushton Nature Keeper releasing a banded Gray Catbird October 10th. Photo by Blake Goll

Now CSA members are enjoying the hardy winter produce like squash and sweet potatoes, while our avifauna has shifted to tough winter birds from the north like White-throated Sparrows, kinglets, and Hermit Thrush.

First White-throated Sparrow of the season (10/1) Photo by Celeste Sheehan
Golden-crowned Kinglet Oct 16th. Photo by Celeste Sheehan

Recent highlights include a young male Rose-breasted Grosbeak on October 10th, our third Yellow-breasted Chat on October 1st (thanks to our new reduced mowing regime), a couple of young female Sharp-shinned Hawks in September, and a young male Scarlet Tanager on September 23rd.

Rose-breasted Grosbeak banded October 10th. Photo by Blake Goll
Yellow-breasted Chat (third of the season!) banded October 1. Photo by Jim Moffett.

Young female Sharp-shinned Hawk banded September 17. Photo by Jessica Shahan.

Young male Scarlet Tanager banded September 23. Photo by Blake Goll

Black-throated Blue Warbler numbers are back up this year from our previous year’s alarming slump. One little female got our silverware on October 1st and decadently dined for five days, increasing her body weight by 22%. A handsome male Black-throated Blue checked in on October 10th as our one-thousandth bird of the season, making this fall our most productive yet by almost double our past records.

Our 1,000th bird banded of the season on October 10th: a Black-throated Blue Warbler. Photo by Jodi Spragins

This local boom may seem peculiar in the wake of the recent article in Science, citing the devastating loss of 3 billion birds in the past 50 years as a result of habitat loss, pesticides, climate change, and other human threats. However, the majority of our birds are hatch year birds that have yet to complete the most perilous journey of their lives: their first migration in the Anthropocene. Thank goodness we can offer them temporary sanctuary within a community of people who care about open space and the abundance it supports.

There’s a lot going on in the woods,

Blake

The Rushton banding crew with No.1,000 (a Black-throated Blue Warbler). Photo by Jodi Spragins

First Birds Nanotagged at Rushton Woods Detected by Chesapeake Bay Motus Tower

October 14, 2019 By Bird Conservation Team

Exciting news! The first birds ever to be fitted with Motus nanotags at Rushton Woods Preserve have been detected by a Motus receiving station in the Chesapeake Bay. The birds are adult female wood thrush migrating south for the winter, after having spent the breeding season at Rushton. Who knows where they are headed next? Hopefully the Motus network will tell us. Stay tuned!

Using Motus and Rushton to Study the Wood Thrush

October 2, 2019 By Bird Conservation Team

The flutelike song of the wood thrush is emblematic of summer mornings at Rushton Woods Preserve. Unfortunately, both the wood thrush population and places like Rushton, with over 50 acres of deciduous forest, are rapidly disappearing. The loss is so dramatic that wood thrush are one of eight species of conservation concern identified for study by a recent Competitive State Wildlife Grant awarded to the Willistown Conservation Trust.

One of our nanotagged Wood Thrush caught on September 17th. Photo by Blake Goll

Under the direction of Lisa Kiziuk, the Trust’s Director of Bird Conservation, University of Pennsylvania graduate student Amanda Bebel is conducting research on wood thrush as her capstone project. Amanda’s work is contributing additional scientific information about the wood thrush’s complete life cycle. The focus of her research is to learn precisely where they go during the breeding season. Since they nest in Rushton Woods Preserve, it is an ideal place to conduct the study. And the newly expanding Motus network, which electronically tracks birds’ movement, is an ideal research tool.

By attaching tiny nanotags (small radio transmitters) to six adults and three juveniles at Rushton Woods Preserve in Willistown and several more at Bucktoe Creek Preserve in Kennett Square, Amanda followed these birds during their breeding cycle with incredible geospatial precision. Throughout the summer, she used a hand-held tracking device to zero in on the birds to their physical location while general detections were consistently picked up by the local Motus automated receiver stations at both Rushton and Bucktoe. As the birds migrate south this fall, the broader Motus network that extends to South America will pick them up.

This work contributes more information to conservationists about how to better protect and manage wood thrush habitat. Pennsylvania plays a critical role in the conservation of the wood thrush as it supports a significant portion (approximately 8.5%) of the entire nesting population of the species.

What type of plants do they need for survival? How far do they go after they fledge? How much contiguous forest do they need? Where do they stop to rest and refuel on their migration path? We hope to learn more about these questions when Amanda completes her research in spring 2020. Stay tuned!