Once found an owl setting up shop behind RH outflow valve of B747 classic. The aircraft was sitting in the weeds (short term parking), and somebody had reported some activity in the area.
I was asked to investigate, but I didn't think anything of it ... got in the highlift, and selected platform up.
Man that bird scared the !!!!e out of me when he come flyin' out of there.
Biggest eyes I've ever seen ... I though he was going to kick my ass but he flew off instead
That was about 15yrs ago ... great memory

cod