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

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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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Rock Ptarmigan — Calling, Early Fall Plumage

© furtive808

Enjoy the cooing of this rock ptarmigan in early fall plumage seen at McArthur Lake in Yoho National Park, British Columbia, Canada. Published on Sep 23, 2012.