|
Hundreds of millions of birds are migrating through the U.S. this weekend. (hollandevens / Pixabay)

The timing coincides with the annual World Migratory Bird Day. The best way to celebrate? Dim external lights to help out the millions of migrating birds passing over Cook County.

|
The 2021 Great Backyard Bird Count runs Feb. 12-15. (Tina Nord / Pexels)

The community science project, held over four days every February, collects data that provides scientists with a long-term record of bird distribution across the globe, helping to identify trends that might be associated with urbanization or climate change.

|
Look for an American goldfinch during Saturday's Big Day birding event. (Ken Gibson / Flickr)

This weekend, people around the world will report their bird sightings as part of a massive citizen-science project. Here’s how it works.