12 of the smallest birds in the world are less than 4 inches long! That is less than the size of a credit card. As well as being remarkable for their small size, these birds display incredible ...

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 ...

Polytypic. Length 6". The house is a relatively small Carpodacus finch with a longish, slightly notched tail, short wings, and a distinctly small bill with a curved culmen. Male: the breast ...