Society finches are not particularly colorful, although they are available in many different morphs, including various shades of brown, grey, and white. Like other finches, these Asian birds have ...

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 ...

In particular, changes to the size and shape of the beaks have enabled the different species to specialise in different types of food: seeds, insects, cactus flowers and fruits or even bird blood. The ...

On various islands, finch species have become adapted for different diets ... to understand the process that had created so many types of finches that differed mainly in the size and shape ...