What is a defining feature of the Buteo family?

A defining feature of the Buteo family, which includes various species of hawks and rough-legged buzzards, is indeed their short, thick toes. This particular adaptation is significant for their hunting and perching behaviors. The robust toe structure provides a strong grip on prey and allows them to hold onto branches or perches securely when resting or scanning the ground for food.

In contrast, other features found in different raptors are present in the incorrect options. For instance, narrow, long wings are characteristic of species that require fast, agile flight, such as falcons, rather than the Buteo, which typically has broader wings suited for soaring and taking advantage of thermals. Clawed feet with webbing is a trait more associated with aquatic birds that need adaptations for swimming rather than the predatory adaptations of Buteos. Lastly, long, slender tails are more typical of species that maneuver in tight spaces or require quick agility in flight, like accipiters, rather than the relatively shorter, broader tails seen in the Buteo family, designed for stability in soaring. Thus, the robust structure of their feet is a key identification point for this family of birds.