Lengthening initial incubation and optimizing egg warming in the hatchery can improve hatch and reduce embryo mortality.

Eggs are among nature’s most fascinating progenating creations, varying widely in size and shape across the animal kingdom.

BIG BEAR — A pair of bald eagles in a 120-foot-high nest that overlooks Big Bear Lake are patiently incubating two eggs laid this month, and the process toward hatching is playing out via a live video ...

Some tropical birds have longer egg incubation times than their temperate cousins, even though their habitat is teeming with egg-eating predators. The reason why has long been a mystery, but a new ...