Biologist and ecologist Tyler Hoar predicts the movements of winter finches by analyzing the status of wild food crops such as spruce cones and mountain ash berries in Canada. Tyler’s winter ...

I am seeing just a few purple finches at the feeders now. Last year, over a dozen were here on many days in January. Some may migrate to the south […] ...

the Grants and their assistants watched the struggle for survival among individuals in two species of small birds called Darwin's finches. The struggle is mainly about food -- different types of ...

Each species eats a different type of food and has unique characteristics developed through evolution. For example, the cactus finch has a long beak that reaches into blossoms, the ground finch ...