Answer:
Since each island is very different, birds from each of these islands all have different beaks, colorations, and sizes depending on the natural environmental factors surrounding their island.
Explanation:
I would also add in how birds had to adapt with different beak lengths and sizes in order to be able to get the food type that was most abundant. Natural selection was abundant in this case if one food source (say small seeds) was scarce, a bird with a small beak 1. Had very little if no small seeds to eat and 2. If there were large nuts that required breaking open (ability with birds for larger beaks to do so), the small bird could not break them open and then would unfortunately probably starve to death. Thus, natural selection occured so the birds with the large beaks were able to carry on their traits while the birds with the small beaks did not have as great of an opportunity (if not opportunity) to carry on their traits.
Since each island is very different, birds from each of these islands all have different beaks, colorations, and sizes depending on the natural environmental factors surrounding their island.
