Have you ever heard of the smelly bird that has claws on its wings? Yes, such an animal does exist—and it’s called the hoatzin. This bird is known for its rotten scent, thanks to its hardworking ...

The Amazon's Hoatzin, or "stinkbird," possesses a unique digestive system that ferments leaves, resulting in a cow dung-like odor. This adaptation allows it to consume tough foliage but weakens its ...

Where it lives: Amazon and Orinoco river basins in South America What it eats: Leaves, fruits and flowers Why it's awesome: The hoatzin is often regarded as one of the world's strangest birds.