Image: The Ultimate Bird Drawing Throwdown Showdown Graphic featuring images of David Sibley and H. Jon Benjamin

Join BirdNote tomorrow, November 30th!

Illustrator David Sibley and actor H. Jon Benjamin will face off in the bird illustration battle of the century during BirdNote's Year-end Celebration and Auction!

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Cliff Swallows Building Nest

© LabofOrnithology

Watch Cliff Swallows collect mud and build their nest one tiny mud "brick" at a time.