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 ...

Most birds spend hours, days, or even weeks painstakingly building their nests. Some birds make nests out of mud, some build nests in trees, and some birds nest on the ground and simply scrape out a ...