This marsh warbler has a cuckoo chick in its nest. It was unable to differentiate between the cuckoo egg and the rest of the eggs in its nest, researchers say. (Per Harald Olsen, NTNU) Female cuckoos ...

Dear Pet Talk: I don’t have pets but keep active birdfeeders, so all the birds are my “pets in the wild.” Why do robins lay blue eggs? — Bird Lover Dear Bird Lover: I concur with you about wild birds ...

Birds have evolved to fit particular environments. Eggs have evolved along with the birds. The eggs that birds will lay this spring will vary in shape and color to facilitate successful hatching in a ...

For roughly a century, researchers have been trying to figure out how different female cuckoos manage to lay such a variety of different egg colors to match different host birds. Now, a group of ...

Curious researchers from the University of Lodz wanted to know if there were any substantial differences between eggs laid by city-dwelling blue tits and their forest-dwelling counterparts. To learn ...

If you have seen a nest with bright blue eggs, you may be wondering what the unique pigmentation does. Now, researchers in a new study have discovered that the color could shield harmful sunlight, ...

Recently, Mrs. Jackson’s second-grade class at Two Mile Prairie Elementary asked why chickens lay different colored eggs. These students were lucky enough to have their own school chicken coop and ...

The world has witnessed white or brown-colored, chicken eggs as farm-processed, pastured-eggs or organic eggs generally, but an unusual discovery has sparked buzz. A rare incident in Davangere ...

If you lay something on the ground, it’s bound to get dirty. And that’s a good thing — at least for blue-footed boobies, which lay their eggs in shallow nests dug into the dirt. The dirtier the egg, ...