Discover the hoatzin, a stinky, leaf-eating bird of the Amazon rainforest with a cow-like digestive system, striking appearance, and unique evolutionary history. If you were to conjure up the ...

Meet The "Flying Cow" Of Amazon Hoatzins have a large crop, a specialised digestive organ where bacteria ferment the leaves they eat, similar to a cow's digestive system. This process gives hoatzins a ...

Hoatzins sport a mohawk-like crest, neon-blue faces, and red eyes, resembling a funky bird with dramatic cape-like wings. Hoatzins are the only birds with a foregut fermentation system, like cows, to ...