Except for one of the enlargements, all of the black-bellied bustards in these images are adult males which are distinguished from other male bustards by the entirely black underparts, grey chin, and white checks surrounded by a fine black line that extends to the posterior eye (see images 1-4). They are prey for some eagles (tawny, crowned) and may fly up to 65 km/hr (Roberts). The call is well demonstrated in the recording.