An illustration of a Common Yellowthroat is part of David Sibley's new book, What it's Like to be a Bird. David Sibley/Albert A. Knopf hide caption
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Monday
Sunday
A group of birders watches a rare Kirtland's warbler at the Magee Marsh Wildlife Area in Ohio in May 2010. Courtesy of Laura Keene hide caption
Saturday
The prothonotary warbler can be found in the eastern United States. Flickr user John Jackson/Flickr Creative Commons hide caption