Do you know what it is ... You might have known that birds lay eggs, but now you know that moths lay eggs. Frogs lay eggs. Crabs lay eggs. And even crocodiles lay eggs too. Maleo fowl lay eggs ...

Birds lay eggs of surprising variety, and scientists have long wondered why. Could it be that certain shapes protect eggs from shattering? Or perhaps allow them to fit snugly in a nest?

Mucus glands and muscular wall aid in laying egg. Birds lay relatively few eggs compared to other vertebrates. Reproduction among all mammals is similar, in that all have internal fertilization and ...

Some animals lay beautiful green, brown, and even pink eggs. Considered to be one of the most attractive are the blue eggs laid by birds. Why do birds lay blue eggs? Well, the blue color has ...

Brood parasitic birds lay their eggs in the nests of others ... forest fragmentation), the acceptance of foreign eggs even when these do not resemble host eggs (nonmimetic), and a high cost ...