It has dark grey upperparts, a white underside, and a streaked head. A thick black band near the tip of its white tail is especially visible in flight.
The back and wings are dark grey, the underside is white, and the head is streaked. The white tail has a thick black band near the tip.
It feeds on lizards, small birds, and small mammals. During display flights, one bird may dive almost vertically for several hundred metres.
An extinction-risk assessment has not been added yet.