White-winged Tern

Scientific Name: Chlidonias leucopterus
Malay Name: Camar-Tasik Sayap Putih
Chinese Name: 白翅浮鸥

Range:
Found throughout Europe to temperate Asia, wintering to Africa, the Indian subcontinent, Southeast Asia and Australia

Taxonomy:
Monotypic

Size: 20-24 cm

Identification: Non-breeding adult resembles Whiskered Tern but has finer bill, distinctive isolated roundish ear-patch (headphones) and whitish rump/uppertail-coverts. Breeding adult has all black head, body and underwing-coverts. Juvenile resembles non-breeding adult but has buff-brown markings on scapulars and back.

Similar looking species: Whiskered Tern

Habitat: Open seas, coastal habitats, mudflats, marshes and reservoirs.

Behaviour/Ecology: Gathers in small loose flocks, feeding by wheeling and skimming low over water surface.

Local Status: Uncommon migrant

Conservation Status: Least Concern (IUCN 3.1)

Location: Lorong Halus, Kranji Reservoir, Upper Seletar Reservoir, Marina Barrage, Straits of Johor and Straits of Singapore.

Photos:

First winter White-winged Tern at Sungei Serangoon. Photo Credit: Francis Yap

White-winged Tern in breeding plumage at Singapore Strait. Photo Credit: Francis Yap

White-winged Tern moulting to non-breeding plumage at Sungei Serangoon. Photo Credit: Francis Yap

Non-breeding White-winged Tern at Sungei Serangoon. Photo Credit: Francis Yap

First winter White-winged Tern at Sungei Serangoon. Photo Credit: Francis Yap

External Links:
Conservation Status: IUCN Red List Page
Photos: Oriental Bird Images
Sound Recordings: xeno-canto Link
Wikipedia Entry: Wikipedia Link

Reference:
Craig Robson (2011) A Field Guide to the Birds of South-East Asia
Allen Jeyarajasingam & Alan Pearson (2012) A Field Guide to the Birds of Peninsular Malaysia and Singapore