A bird, which is nice and squishy and falls apart easily, can do serious damage to a plane. Just search on youtube for bird strike, and you'll see lots of smash

A bird, which is nice and squishy and falls apart easily, can do serious damage to a plane. Just search on youtube for bird strike, and you'll see lots of smashed windshields, jets losing engines, damaged elevators, etc. Now, add more weight, more density, and more speed, and you can see how this can get to be a real problem.