The Great Backyard Bird Count is an annual four-day event that engages bird watchers of all ages in counting birds to create a real-time snapshot of where the birds are across the continent. Anyone can participate, from beginning bird watchers to experts. It takes as little as 15 minutes on one day, or you can count for as long as you like each day of the event. It's free, fun, and easy-and it helps the birds."

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Eurasian Tree Sparrow

Contributors: Colleen Crank

Now a specialty of Missouri and Illinois, this species was introduced in the 1870s, and appears to have little effect on native species. This photo was taken at the Litzsinger Rd Ecology Center in Missouri.

Eurasian Tree Sparrow
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