How do Merlins differ in structure from American Kestrels?

The correct choice highlights that Merlins possess sharper wings and broader bodies compared to American Kestrels. This anatomical distinction is crucial in understanding the hunting and flying abilities of these two species.

Merlins are designed for speed and agility, featuring wings that are more pointed and aerodynamic, which aids in rapid flight and acrobatic maneuvers during hunting. Their broader bodies contribute to their overall strength and stability in flight, enabling them to chase down small birds effectively.

In contrast, American Kestrels are built differently, with a more compact and stocky appearance, which reflects their hunting style and prey choice. They tend to hover more frequently and are adept at hunting insects and small mammals, which doesn't require the same level of agility as the hunting techniques used by Merlins.

Understanding these differences in structure helps clarify why each species has adapted to their specific ecological niches and hunting strategies.