What is a buzzard?

The correct choice highlights that a buzzard can indeed be defined as a member of the genus Buteo, which encompasses various species known for their excellent soaring abilities. This aspect is a significant characteristic of buzzards, as they are often observed gliding gracefully through the sky, showcasing their strong wings adapted for soaring flight.

Furthermore, the inclusion of the European vernacular provides context, as "buzzard" refers to different species in different regions. In Europe, the term often refers specifically to the common buzzard (Buteo buteo), while in North America, the term is sometimes used incorrectly to describe a variety of raptors, including buteos and others.

The clarification that option B is not included is important because while certain species do have a featherless head, which is more characteristic of vultures than buzzards, it doesn't accurately represent the general characteristics of buzzards, which focus on their soaring capabilities and diverse species classification across different regions.

This reasoning supports understanding the characteristics and classifications of buzzards within the context of raptors, ensuring a comprehensive grasp of the topic for those studying falconry and related avian sciences.