Describe the key field marks that distinguish this species from any similar ones.

The fruit or 'hips', help to distinguish species and are ripe now.

The hairiness of the leaves, along with the black seeds, distinguish this species from others.

Size readily distinguishes this species from most other raptors when it is seen well.

However, using scale morphology alone to distinguish species has some pitfalls.

Different length leaves, but all lined up in a flat plane, is a useful way to quickly distinguish this species.

The best way to distinguish species is by voice, by breeding habitat and/or range.

As the flowers and fruit are highly similar across all species in the series, it is difficult to distinguish individual species.

A single pair of scales is located at the front of the head, which also distinguish this species.

There is a vertical black line on the white throat, which distinguishes this species from all other raptors.