Does a cuckoo know it's a cuckoo? The answer is more difficult than you might think, explains Richard Pallardy ...

The spiny leaf insect mother not only abandons her eggs, she's also figured out how to trick someone else into protecting and ...

WorldAnimalFoundation.org is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn More When you think of reptiles, eggs usually come to mind—but nature ...

Big Bear bald eagle couple Jackie and Shadow are preparing their nest for a potential new clutch of eggs. The pair has been observed performing nesting rituals, such as arranging sticks and testing ...

Big Bear bald eagle couple Jackie and Shadow are preparing their nest for a potential new clutch of eggs. The pair has been observed performing nesting rituals, such as arranging sticks and testing ...