Midwest · Mississippi Flyway
Birds in Illinois
Illinois's Lake Michigan shoreline funnels migrating warblers and sparrows through Chicago.
Popular cities in Illinois
Common Birds in Illinois
The most frequently reported bird species across Illinois. Click any bird for full profiles, photos, calls, and attraction tips.
Backyard Birds in Illinois
Birds that regularly visit feeders and gardens in Illinois. These are the species you're most likely to attract with the right food, plants, and habitat setup.
Birds by Habitat in Illinois
Illinois spans 3 major habitat types. Explore birds adapted to each environment.
Top Bird Watching Spots in Illinois
The best places to go bird watching in Illinois, from national wildlife refuges to local sanctuaries.
Montrose Point Bird Sanctuary
Chicago's lakefront migrant trap—warblers in May.
Bird Calendar — Illinois
What to expect each month: migration arrivals, departures, and seasonal highlights.
Explore neighboring states
About birding in Illinois
Illinois is located in the Midwest region of the United States and falls along the Mississippi Flyway, one of four major North American migration routes. The state is home to more than 440 bird species across 3 habitat types: forest, wetland, urban.
Whether you're a backyard birder in Chicago or planning a trip to Montrose Point Bird Sanctuary, this guide covers the most commonly seen species, seasonal patterns, and practical tips for attracting and identifying birds in Illinois.