I once read (I'm sure it was in the American version of the magazine 'Flyer' ) of a Griffon Vulture that was hit by a jet (from memory a B707, or was it a DC8?) whilst the a/c was climbing/descending at something like FL180.
Now, if you've ever seen a Griffon Vulture you'll know that they're some BIG bird !
Thus a/c walloped the bird on the radome, which the bird subsequently went straight through, and then through the firewall, before coming to a halt about the F/O's legs - which it broke both of ! - and seriously damaging the controls / instruments.