What are some animals that give birth to huge numbers of offspring at once?” (Watch a female sea urchin produce millions of eggs.) The mola, or ocean sunfish, looks like an animal cracker someone bit ...

Reproduction in the animal world can be complicated at the best of times. But far from the flashy birds or mammals competing ...

What really did come first--the chicken or the egg? Birds' reproductive biology is dramatically different from that of any other living vertebrates, and ornithologists and paleontologists have long ...

"All collared lionesses have had cubs, signaling successful reproduction," Matthieu Finiels of the Wildlife Conservation Society told the outlet.

Bird populations are in rapid decline across North America. While climate change is just one of the many factors influencing North American birds, its effects are significant and can interact with ...