Pitohui
We know of snakes and fish being poisonous, but a poisonous bird? That is what the brightly colored pitohui is; it is a native of New Guinea. At least three of the bird's species have poison in their skin and feathers, which is used only as mechanism against predators such as snakes and hawks or even humans. The poison has served the bird well: humans, even the natives in New Guinea, very rare would think of eating it.
More on the Pitohui: BBC, NPR, Species Wikimedia, Wikipedia, uga.edu, The New York Times, Bird Forum, interaktv, Menankatuck, Suite 101.com, itg.be, National Geographic, WWF, Scholar
More on the Pitohui: BBC, NPR, Species Wikimedia, Wikipedia, uga.edu, The New York Times, Bird Forum, interaktv, Menankatuck, Suite 101.com, itg.be, National Geographic, WWF, Scholar