I am a cactus finch. I have a longer, sharp pointed beak to probe cactus flowers.
I am a warbler finch. I have a needle-like beak. I eat insects.
I am a woodpecker finch. My beak is strong and thick. I peck wood for termite and beetle larvae.
Charles Darwin believed that a few seed-eating finches were blown from the mainland of South America to the Galapagos Islands.
After these finches arrived onto the islands and over many, many years, something very interesting happened. From this species of finch that looked the same...
Now on each island the finches looked different: especially their beaks! How did this happen? Well, the islands were so far apart that the finches didn't fly from island to island. So they stayed on their island and developed adaptations that were important to survive in their specific habitat. Charles Darwin wrote all about his discoveries in a very famous book called, The Origin of Species.