Description: Opisthocomus hoazin -- a member of the Musophagidae, the turaco theropods -- is a long-tailed, head-crested dinosaur with long legs of South America, roosting in communities, and with behavioural systems perhaps providing one with insights into pre-K/T taxa with analogous econiches (dinosaur colonies as information centres). As is well-known, nestlings have manal unguals allowing it climb in tree branches, and, when predators approach, it will drop into streams, then using manal and pedal unguals to climb back into the trees (often "running" up the trunks, in ways ?similar to those filmed by Ken Dial). Cf: S.D. Strahl, 1987. The social organisation and behaviour of the hoazin Opisthocomus hoazin in central Venezuela.
