Merck Manual

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Mange ( Knemidocoptes ), beak and face, parakeet
Mange ( Knemidocoptes ), beak and face, parakeet

Mange (Knemidocoptes) on the beak and face of a parakeet. Pale, crusty lesions are present, and the beak is malformed due to the presence of mites.

Courtesy of Dr. Louise Bauck.