Since 1900, the National Audubon Society has led the charge in counting birds during the annual "Christmas Bird Census" across the U.S., Canada and many other countries in the Western Hemisphere. It's longest-running citizen science survey in the world!
Audubon and other organizations use data collected in this longest-running wildlife census to assess the health of bird populations - and to help guide conservation action.
If you would like to participate this year, please click here.
Hiking in Glacier National Park