Which type of raptor starts molting its outermost primary first?

The correct choice indicates that none of the categories listed—falcons, buteos, or accipiters—start molting their outermost primary feather first. In fact, most raptors, including falcons, buteos, and accipiters, typically commence the molting process with their innermost primary feathers and then progress outward. This pattern is essential for maintaining flight efficiency, as newer feathers grow in and replace worn-out ones systematically.

Understanding feather molting is crucial for anyone involved in falconry or studying avian biology, as it impacts a bird's ability to fly and hunt effectively. Each type of raptor may have slight variations in their molting patterns or durations, but the general sequence of molting from the innermost to the outermost primary is a common characteristic across these groups. Therefore, indicating that none of the options provided starts molting their outermost primary first aligns with the well-established knowledge of raptor behavior in terms of feather regeneration.