In the world of birds, where fancy can be as fleeting as flight, the color of the bird apparently has a profound effect on more than just its image. A new study of barn swallows reveals it also ...
TEMPE, Ariz. – In the world of birds, where fancy can be as fleeting as flight, the color of the bird apparently has a profound effect on more than just its image. A new study of barn swallows reveals ...
The swallows obtain carotenoids from insects that feed on plants rich in the nutrients. Since the barn swallow reproductive season lasts about four months, it makes sense that individuals should be ...
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