A male robin will be more diligent in caring for its young if the eggs its mate lays are a brighter shade of blue. A male robin will be more diligent in caring for its young if the eggs its mate lays ...

A male robin will be more diligent in caring for its young if the eggs its mate lays are a brighter shade of blue. Queen's University biology professor Bob Montgomerie has been studying robins on and ...

Discover five fun facts about the American robin — its habits, egg color, and why scientists keep a close eye on this common ...

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 ...

People have always wondered why many birds lay bright blue eggs. David Lahti of the City University of New York and Dan Ardia of Franklin & Marshall College tested the hypothesis that pigmentation ...

In the spring, robins living on an Illinois tree farm sat on some unusual eggs. Alongside the customary brilliant blue ovoids they had laid were some unusually shaped objects. Although they had the ...