There is a type of parrot in Newzealand that is quite unlike any other parrot, it is the only parrot that is omnivore, it kills and eats smaller creatures like rodents or birds when food is scarce.
It is also a notorious prankster, hikers are its favorite targets. Vadalizing the things of hikers and campers, rolling rocks on them are some of its favorite games.
Apart from that it loves to experiment with every interesting looking thing. That causes serious mess in city streets.
Some towns put up boards asking people to not encourage or feed them. 🙂