Butterflies have a fair few predators, birds being the most renowned. Alot of butterflies are
turned into lunch before they even make it far from the chrysallis.
Butterflies have defense mechanisms they use to avoid predators and other dangers. For instance,
there are butterflies with a poisoned coat, so once eaten, they will probably be the animals last meal. Others try and mimic
the colors of poisonous species, so as to fool the hungry what-ever that happens to be shasing it. Some butterflies have developed
a camouflage that helps them to blend in with their surroundings.
Even with a piece of their wings missing, a butterfly can usually stay airborn, even
after an attack by any such predator.