Scientific Name: Hemiprocne longipennis
Malay Name: Lelayang-Berjambul Tongkeng Kelabu
Chinese Name: 灰腰雨燕
Found from Southern Thailand, Malaysia, Singapore to Indonesia.
Polytypic. Subspecies are: harterti, perlonga, longipennis, wallacii
Local Subspecies: harterti
Size: 18-21.5 cm
Identification: A rather big swift-like bird with dark glossy greenish crown, nape and mantle, blackish lores, greyish throat, whitish underparts. Tail-tip falls short of primary wing tips when perched. In flight, greyish back and rump contrast with dark mantle and has contrasting blackish underwing coverts. Male has chestnut ear-coverts while female has blackish ear-coverts.
Habitat: Open habitat, parkland and forested area.
Local Status: Uncommon resident
Behavior/Ecology: Feed on small insects taken in flight. Usually perch high up on tree.
Conservation Status: Least Concern (IUCN 3.1)
Location: Central Catchment Forest, Bukit Timah Nature Reserve, Bukit Batok Nature Park, Bidadari, Singapore Botanic Gardens, Kent Ridge Park and Bishan Park.
Craig Robson (2011) A Field Guide to the Birds of South-East Asia