Wild-type males are more colorful ... However, these attractive Asian finches can change their color quite dramatically ...

Few people have the tenacity of ecologists Peter and Rosemary Grant, willing to spend part of each year since 1973 in a tent on a tiny, barren volcanic island in the Galapagos. Even fewer would ...

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 ...