Data was collected concerning Galapagos bird beak size over time. There are several species of finches, and they are also known as Darwin’s Finches. These finches share 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. Around 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?Responses
- AThe small-beaked finches were prey for larger animals.
- BThe large-beaked birds preyed on the small-beaked birds.
- C Available food changed and the small beaked birds could not readily adapt
- D Competition for food favored large beaks; the small beaked birds died off.
