Males are grey with long white eyebrow and moustache-like stripes, chestnut ear patches, and white underparts. They launch from high perches to catch flying insects.
Males have long white eyebrow and moustache-like stripes, chestnut ear patches, and white underparts. Females lack the chestnut ear patches.
It waits on an exposed perch, launches after flying insects, and may return to the same perch.
Some adults replace their primary feathers while caring for an egg or small young.
It often flies at dawn and dusk and gives sharp repeated kwik calls or a descending kweeuu call.
Recently fledged birds are brown and mottled, with white fringes on the tips of their primary and secondary feathers.
In flight the long, thin wings show a white line behind the black trailing edge; the long forked tail is usually held closed to a point.
An extinction-risk assessment has not been added yet.