You are able to gift 5 more articles this month. Anyone can access the link you share with no account required. Learn more. A down feather illustrates the varied assortment of barbs that allow it to ...
Feathers define birds. Other critters, like insects, fly; but no other critter wears feathers. And what amazing structures they are, these feathers. They allow birds to fly, perform mating displays, ...
Explore the colors of songbird migration in a photo essay that displays the ways distance and timing affect plumage. In late summer and autumn, millions of birds fly above our heads, often at night, ...
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