Cerebellar Hypoplasia in Two Juvenile African Grey Parrots ().

Two sibling 12-week-old DNA-sexed female African grey parrots () were presented for progressive whole-body tremors, proprioceptive deficits, and an inability to stand unassisted. A third bird in the clutch (DNA-sexed as a male) exhibited no clinical signs. Physical examination of the affected birds revealed ataxia, inability to stand without assistance, and a reliance on their beaks to assist with their mobility.