A 1-year-old red-crowned parakeet (Cyanoramphus novaezelandiae) was presented with an acute onset of hyperprotraction of the upper beak and an inability to return the beak to its normal position. With ...

An adult female red-crowned parakeet (Cyanoramphus novaezelandieae) was presented for necropsy and histopathologic evaluation. The bird had died after exhibiting lameness, weight loss, respiratory ...