Found on the Galapagos Islands there are several species finches, also known as Darwin's Finches. These finches share the same co-exist on the islands sharing the same habits and characteristics except for one; they all have different shaped and sized beaks. The differences in their beaks might be the most important aspect of their survival. Notice that for about ten years the populations of the two different finch species remained pretty stable largely because the two species had varied food sources. Then in 1977, there was a huge drop in finches with small beaks while there was a great increase in large-beaked birds. How can you explain this? A) The small-beaked finches became prey for larger animals. B) The large-beaked birds preyed on the small-beaked birds. C) The available food changed, the small beaked birds could not readily adapt and they began to die out. D) Competition for food favored the large beaks; the small beaked birds had little or nothing to eat and they died off.