Northwestern Crow with deformed top beak in Auke Bay, Juneau, Alaska

Detailed Description
Northwestern Crow with deformed top beak in Auke Bay, Juneau, Alaska. Avian keratin disorder (AKD) is a disease characterized by debilitating beak overgrowth and other abnormalities of keratinized tissues. Affected birds have difficulty feeding and preening and may suffer high rates of mortality.
Sources/Usage
Public Domain.
U.S. Geological Survey