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 ...

Add Yahoo as a preferred source to see more of our stories on Google. When most people picture an egg, they imagine the familiar white shell laid by a chicken. But in the wild, eggs come in a ...

Here's what the shell—and yolk—color of an egg actually reveals about quality. Eggshell color comes down to hen genetics—not nutrition, flavor, or quality—so brown, white, and blue eggs cook and taste ...

AUSTIN, TEXAS — Vital Farms debuted True Blues, an heirloom egg marked by its blue shell, which will be available at select Whole Foods Markets locations. The eggs are produced by heirloom breeds of ...