<p dir="ltr">With an insect in its mouth, a yellow warbler takes off in <a href="http://www.nps.gov/grte/index.htm">Grand Teton National Park</a>, Wyoming, in 2012.</p><p>Warblers, which dine on midges, caterpillars, and leafhoppers, are recorded during the annual Audubon <a href="http://birds.audubon.org/christmas-bird-count">Christmas Bird Count</a>. One of the longest and largest citizen science projects in the world, the bird count celebrates its 115th anniversary this winter.</p><p><em>—By Christy Ullrich Barcus, photo gallery by Kathy Moran</em></p>

Yellow Warbler

With an insect in its mouth, a yellow warbler takes off in Grand Teton National Park, Wyoming, in 2012.

Warblers, which dine on midges, caterpillars, and leafhoppers, are recorded during the annual Audubon Christmas Bird Count. One of the longest and largest citizen science projects in the world, the bird count celebrates its 115th anniversary this winter.

—By Christy Ullrich Barcus, photo gallery by Kathy Moran

Photograph by Robbie George, National Geographic

National Geographic's Favorite Bird Pictures

In honor of the 115th anniversary of the Audubon Christmas Bird Count, National Geographic editors searched the archives for our most compelling bird pictures.

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