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 ...

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 ...

Known for their bright blue eggs, American robins are a familiar sight hopping across lawns in search of worms, fruit, and insects like grasshoppers and caterpillars. They are early risers, singing ...

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 ...