Even fewer would have the patience to catch, weigh, measure, and identify hundreds of small birds and record their diets of seeds. But for the Grants, the rewards have been great: They have done ...

Birds are widely regarded as symbols of freedom and eternity due to their ability to soar into the skies. Their symbolism exists all over the world as part of different cultures, religions, and ...

There are now at least 13 species of finches on the Galapagos Islands, each filling a different niche on different islands. All of them evolved from one ancestral species, which colonized the ...