For most animals, reproduction is straightforward: Some species lay eggs, while others give birth to live babies. But our recent research uncovered a fascinating mix between the two modes of ...

The discovery of several exceptionally preserved reproduction-related dinosaur specimens over the last three decades has improved our knowledge of dinosaur reproductive biology. Nevertheless, due to ...

What came first, the chicken or the egg? For Jules Howard, a London-based biology writer and the author of “Wonderdog,” there’s no debate. In “Infinite Life: The Revolutionary Story of Eggs, Evolution ...

The egg was destined to hatch into a dinosaur. Then came the water. Swept away by a storm or knocked into a river, the egg drifted to sea at a time when the Gulf Coast stretched somewhere north of ...

What do you think of when you picture an egg? Almost certainly something oval – most likely a hen’s egg, at least at first. But eggs as a broader category exist in many forms and have been around ...

It was nature’s version of an Easter egg hunt. Dr. Claire Spottiswoode, a professor at the University of Cape Town who studies avian (bird) brood parasites, was working in Zambia to learn more about ...