No bird incidents at high altitudes but I got a HUGE bug splat on the windshield at 14 or 15 one day. What the hell is some dumbass bug doing up there----might have been a Steve Fossett beetle going for an altitude record. I probably ruined his once-in-a-lifetime attempt.
I was about 10,000 one day over Big Bear Lake and was startled by looking UP and seeing a powered parachute (or whatever the hell they're called) a couple of thousand above me. Speaking of YO-YO'S, anybody remember the jerk that fastened a bunch of balloons to a lawn chair and ascended through LA's airspace with a BB gun for altitude control? I would have loved to heard the PIREPS on that........ "Uh, LA center, United 1836 heavy, Do you show a man in a lawn chair at 10,500 over HTSHT intersection?"----------"United 1836 heavy, LA center, after landing, please report to the FSDO office for a random drug test"