Abnormalities can be found in all life forms–corvids included. Here are some interesting photos I found of corvids with two abnormalities deformed beaks and partial albino-ism–leucistic or albino corvids.

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Read about THE MYSTERY OF THE LONG-BEAK SYNDROME here. Or you can read Passerines with Deformed Bills by Julie A. Craves (an article) here.
There seems to be a high concentration of birds with deformed beaks in the Pacific Northwest–I wonder why.