Answer :

The differences in a bird's beak is an example of adaptation.

Here's why:
1. Adaptation refers to the process by which a species becomes better suited to its environment over time.
2. In the case of bird beaks, they have evolved to be diverse in shape and size based on the feeding habits and environmental conditions of the bird species.
3. For example, a bird with a long, slender beak may be adapted for probing deep into flowers for nectar, while a bird with a strong, hooked beak may be adapted for tearing into flesh or cracking open seeds.
4. These variations in beak shape and size help different bird species thrive in their respective habitats by enabling them to efficiently obtain food.

In summary, the differences in a bird's beak serve as a clear example of adaptation, showcasing how organisms evolve specific traits to better survive and reproduce in their environments.