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 ...

Scientists have examined fossil relatives of the South American Hoatzin (Opisthocomus hoazin), which point to African origins for the enigmatic bird. A team comprising German, Brazilian and French ...

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 ...

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 ...