Please help protect bird habitat along the Chicago River. Lighting, noise and tree removal are not appropriate for this quiet wildlife corridor.
A Year of Helping Birds: Become a Community Scientist
Searching for the Swamp Candle
UPDATE - Chicago Audubon Society calls for a name change
A Closer Look at Tern Primary Patterns
Endangered Black-crowned Night-heron Study - You Can Help!
Exploring the Bird Life of a Woodland: The Sauk Trail Preserves Blitz
A Year of Helping Birds: Go Birding!
Identification of Swallows in Flight
ID of Common and Forster’s Terns in Spring
Common Tern and Forster’s Tern are subtle birds that create a lot of confusion for birders, especially in places like Chicago where we see them both in small numbers during migration. The field marks for these species are subtle and variable, however even when people put in time to learn the field marks, they may struggle if they don’t know what to prioritize.
CAS Native Plant Sale a success for the birds!
A Year of Helping Birds: Avoid Harmful Pesticides
Pesticides are used to kill unwanted pests - insects and rodents, mainly, and they’re used everywhere: on farms, in our homes, lawns and gardens. Tragically, pesticides don’t just stop at their intended targets - often they kill birds (and bees and butterflies and other animals), resulting in at least 67 million bird deaths every year in the U.S. There are safer alternatives.
A Year of Helping Birds: Make Migration Safe: Windows, Lights and Bird-Safe Design
Every year, up to a billion birds are killed by crashing into windows, greatly reducing already decreasing overall bird populations. It’s a terrible death, killing birds in their prime as they migrate to start new families in their breeding grounds. We can prevent many of these deaths by turning off lights at night during migration, and making windows less reflective.
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Farewell to a Board Member of 25 Years
Help CAS Save Birds - Join the Advocacy Task Force
A Year of Helping Birds: Provide Habitat - Plant Native Plants and Leave the Leaves
Bird populations are dropping drastically and much of this is the result of habitat loss. Native plants are a primary source of habitat for birds; they supply food, shelter, and nesting for raising their young. Learn how you can help birds survive and thrive by planting natives in your yard, patio, or window box.
Join the Search for Secret Migratory Bird Hotspots! Year 2
CAS In the News
A Year of Helping Birds: Reduce Your Carbon Footprint
Carbon emissions and climate change are affecting birds in many negative ways, reducing food and habitat, and placing many bird species into a precarious struggle for survival. Reducing your carbon footprint is complex and sometimes difficult, but challenging yourself to make a few changes can be empowering.



















