Psittacine beak and feather disease, cockatoo
Psittacine beak and feather disease, cockatoo
Psittacine beak and feather disease, cockatoo

    Psittacine beak and feather disease (circovirus) in a lesser sulfur-crested cockatoo showing a general loss of feathers on the trunk and neck. The pin feathers on the neck are not emerging.

Courtesy of Dr. Louise Bauck.