Well....My father used to talk about the very large scavenging birds that always used to circle over Crater Camp in Aden, searching for rubbish, He was stationed there during his National Service in the late 1940s.
In the 1990s, I was a SAR helicopter pilot in the Far East (using the PRuNe name SARboy back then). Once, during a night Casevac, flight I hit one of these "****e Hawks; so big it blotted out the moon. Scared the living daylights out of me and for a few seconds I thought we were probably going down in the sea with the stretcher-bound casualty on board. You don't forget moments like that.
When I changed jobs it was as a police pilot, often circling whilst searching for rubbish (i.e. criminals). I discovered I'd lost my original username due to a big server crash during the time I was emigrating. This one fitted the bill.