'Going-light' and psittacosis.
D000818:Animals; D001715:Bird Diseases / Q000175:diagnosis*; D002691:Chlamydophila psittaci / Q000302:isolation & purification; D003937:Diagnosis, Differential; D010240:Parakeets; D011563:Psittaciformes; D009956:Psittacosis / Q000175:diagnosis / Q000662:veterinary*