Kestrel-sized but with longer wings. Its upperparts are slaty grey, the underparts white with bold streaks and with bright reddish “thighs”. The head has a distinctive bold dark moustache. It has a very rapid and aerobatic flight which allows it to hunt birds like swifts and swallows, although they will also hunt dragonflies and bats. In Extremadura they are summer visitors, arriving from their African wintering grounds towards the end of April.