Peter and Rosemary Grant have spent many years in the Galapagos, seeing changing climatic conditions from year to year dramatically altering the food supply. As a result, certain of the finches ...

barren volcanic island in the Galapagos. 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 ...

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 ...

In fact, the region is home to 45 types of marine birds and 22 land birds you won't see anywhere else (think: Galapagos penguins and Darwin's finches), not to mention other unique species like ...

This is a harsh place to survive, unless you are a seabird which can get food from the rich adjacent ocean,' he explains. But finches are not seabirds and instead of a seafood diet, these small birds ...