What is a distinguishing feature of the Goshawk?

The distinguishing feature of the Goshawk is the presence of a white superciliary line, which is a prominent stripe or line above the eye. This feature is key for identifying the Goshawk and differentiating it from similar species. This white line contrasts sharply with the bird's overall darker plumage, enhancing its facial markings.

Aside from the white superciliary line, the Goshawk also typically has a robust build and shows a variety of color patterns depending on the age and morph, which can include dark plumage. However, it is the distinctive white line above the eye that serves as a crucial identifier during field observations.

The other characteristics mentioned can relate to various bird species but do not specifically highlight the defining features of the Goshawk. A squared tail, for instance, is more associated with other raptors and does not accurately represent the Goshawk's tail shape. Dark plumage with rust-colored patches might refer to different raptor species that exhibit similar coloration but are not exclusive to the Goshawk. Finally, banded wings and tail might apply to a number of raptors, but the Goshawk is more uniquely identified by its facial markings, particularly the white superciliary line.