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Black-capped Chickadee with lower elongated and upper curved beak

By Alaska Science Center
A Black-capped Chickadee with a severely deformed beak where the upper beak is elongated and curved down while the lower beak is
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Detailed Description

A Black-capped Chickadee with a severely deformed beak where the upper beak is elongated and curved down while the lower beak is  elongated and straight

Sources/Usage

Public Domain.