I remember years ago reading a USAF flight safety publication detailing a snake strike by an F-4 at ~FL450. Apparently it had been sucked up in a tornado, which must have been close by. Also read a flight safety report of a B737 hitting a salmon on departure. An eagle was flying by with the fish in it's talons and the '37 scared it into dropping it's dinner. Hit a windscreen if I remember correctly. On the other side of the coin, I hit a bird on touchdown in a Bell 212 with the rotor. It was just a little 'pop' and a very small cloud of feathers and such. So a very low 10' AGL.
