Question

each of these finches has a different diet, allowing them to fill different niches. what changed on each finch, allowing them to eat different things? their feather color their eyes the shape of their beaks

Explanation:

The shape of a finch's beak is directly related to its diet. Different beak shapes are adaptations for eating different types of food (e.g., cracking seeds, probing for insects). Feather color and eyes are not primarily related to dietary differences.

Answer:

the shape of their beaks