Kemp's Longbill

A slender tern with a short bill. Breeding adults are dark-capped with an ashy-gray body, a strongly contrasting white cheek stripe and rump, and a reddish bill and legs. In flight, underwings and uppertail are mostly grayish. In non-breeding plumage resembles other non-breeding terns, but note structure. Restricted to a handful of subantarctic islands, where it forages in inshore waters; common on Kerguelen and uncommon on Crozet and Marion. In breeding plumage, the larger Antarctic Tern is paler gray than Kerguelen, with a larger bill and whitish (not grayish) uppertail and underwings. Arctic Terns (in non-breeding plumage) only overlap with Kerguelen Terns (in breeding plumage) in austral summer.

Male has dark slaty-gray head, neck, and upper breast; rest of the body is pale gray, with white on the belly. Wings darker than mantle. Female lacks the black hood, and has a whitish supercilium, brownish-gray upperparts with lightly barred back and rump, and buff-white underparts with wide brown bars. Juvenile is similar to female, but upperparts barred white. Immature similar to female. Song is a series of clear, loud whistles: “pee-pe-pe-pe-pe-twe-twee.” Some notes can be omitted, or additional notes added. 

A small sunbird. The male is dark overall, with a pale lower belly and orange tufts at the shoulder that are sometimes hidden. The female is plain gray-brown with a paler lower belly. Singles and pairs prefer arid scrub and savanna, feeding on insects and nectar. The species is nomadic and can irrupt in large numbers into areas where it is normally irregular, often on the fringes of its range. The female Dusky Sunbird has paler underparts than the similar female Southern Double-collared Sunbird.