| PS | an order of birds including parrots and amazons and cockatoos and lorikeets and lories and macaws and parakeets |
|---|---|
| PS | primitive dinosaur actually lacking horns and having only the beginning of a frill |
| PS | primitive dinosaur actually lacking horns and having only the beginning of a frill |
| PS | an atypical pneumonia caused by a rickettsia microorganism and transmitted to humans from infected birds |
| PS | infectious disease of birds |
| PS | a genus of Psittacidae |
| PS | African parakeet |
| PS | type genus of the Psittacidae: usually restricted to the African gray |
| PS | commonly domesticated gray parrot with red-and-black tail and white face |
| PS | either of two muscles of the abdomen and pelvis that flex the trunk and rotate the thigh |
| PS | small winged insect living on the bark and leaves of trees and feeding on e.g. fungi and decaying plant matter |
| PS | a family of small soft-bodied insects that feed on decaying vegetation |