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 ...
When I was teaching ornithology, there were several questions that my students would invariably ask at some point during the academic term. One was why are robin eggs blue? Even Charles Darwin ...
Sentinel & Enterprise: Why are robin’s eggs blue? Same reason we bruise
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 ...
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The eggshells of modern birds exhibit a spectacular array of rainbow hues—from butter yellow to blood red, palest aqua to darkest cyan. Some are spotted or speckled; others are blemish-free. How and ...