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 ...

There are now at least 13 species of finches on the Galapagos ... from an original paucity of birds in this archipelago, one species had been taken and modified for different ends." ...

The finches in the above video were collected from the Galápagos Islands in 1835 by Charles Darwin and his colleagues during the second voyage of HMS Beagle (1831-1836). The different finch species on ...