With the current widespread bird flu and rising egg prices, some Americans may be starting to wonder where their eggs actually come from. Aren't hens just popping out a bunch of eggs each day? If you ...

Q. When we studied high school biology, our teacher said more than 99 percent of animals lay eggs and only a few give live birth. That percentage seems too high. Humans, dogs, cats and cows are ...

Animals reproduce in a variety of fascinating ways. Some species, including humans and many other mammals, give birth to live young that develop inside the mother’s body. Others reproduce through less ...

About a third of Chicago-area bird species are laying their eggs earlier than normal, a study recently published in the Journal of Animal Ecology found. Researchers believe the change in nesting is ...

Shoppers used to picking up the cheapest eggs at the grocery store may now be reaching for higher-end cartons. That’s because bird flu is turbocharging prices of commercially produced eggs, while ...

“Turtles were around before dinosaurs, and they watched them emerge, prosper, and disappear altogether. Without changing their body plan at all, turtles further observed the rise of birds and mammals.

PITTSBURGH (KDKA) - The eagle couple in Pittsburgh's Hays neighborhood is keeping two eggs warm and counting down to hatching later this month. Why do eagles jump the gun when most birds nest and lay ...

Q. Do brown-headed cowbirds select the nest of another bird to lay eggs in based on which species raised them as a nestling? In other words, if a cowbird is raised as a chick by a red-winged blackbird ...

A tree frog: female (larger individual below) laying eggs, which are protected by the 'foam nest' and male (smaller individual above). When it comes to laying eggs, tree frogs have some unusual habits ...

Q. I am doing a project on different types of eggs in the animal kingdom. Can you tell me the approximate percentage of animals that lay eggs? I know mammals do not and birds do. What about other ...