Because parrots are pretty angry, and are birds, and pirates have parrots, and pirates are also angry. SCIENCE!
Given that the game is already heavily balanced in favor of the attacker, is there going to be any defensive buff to help counter the inevitable slaughter a legendary pirate is going to bring? Its impossible to make a base that can prevent a guaranteed 1*, nevermind 2 or 3*, with the current balance. I have a feeling once ching is back in the mix, nevermind the other legendaries, it'll be hard to keep literally every single defense to less than 2*. I hope they're expensive as well :c as a primarily defensive player I'm scared that I'm going to have absolutely no chance to finish my 500 victory quest, and I'm 96% of the way there. Either way, I'm excited. Sadie the Goat made me smile, and this means we get our mortars fixed soon! I just hope balance doesn't get even worse.
I don't think regular pirates will. But the legendary ones may. Who knows. Both may do it eventually.