Decatur Area Audubon Society Big Day & World Migratory Bird Day
Sat, May 10
|Location TBD by you.
Join our Big Day Competition, spotting as many different species as possible throughout Illinois in 24 hours. Participants can be solo or in groups. Prizes and additional details below.


Time & Location
May 10, 2025, 1:10 AM – 11:50 PM CDT
Location TBD by you.
About the event
Decatur Area Audubon Society Big Day: ALL DAY
Join our Big Day Competition, bird anywhere you like within the state of Illinois, and spot as many different species as possible within 24 hours.
Participants can be solo or in groups, with prizes available in several categories, including:
The Solo Birder – Most species counted by an individual birder
The Groupie – Most species counted by a birding group (participants must bird together).
The Backyard Birder – Most species counted in a single location (Stationary).
