Venomous and Poisonous- exceptions in nature

[Tbone192]

Pitohui dichrous....or as I like to call em, Fugu of the sky.

One of few neurotoxic birds to exist on Earth at the same time as humans, now that's just badass

 

[The Snark]

Pitohui dichrous

That's a very weird bird. They established it packs a toxin but can't figure out how or why. Diet? Some evolutionary quirk?