Thai National Parks

Birds of Thailand

Species of Thailand

Black-naped tern

Thai: นกนางนวลแกลบท้ายทอยดำ, nok naang-nuan klaep thai-thoy dam

Binomial name: Sterna sumatrana, Thomas Stamford Raffles, 1822

The black-naped tern (Sterna sumatrana) is an oceanic tern mostly found in tropical and subtropical areas of the Pacific and Indian Oceans. It is rarely found inland.

The tern is about 30 cm long with a wing length of 21–23 cm. Their beaks and legs are black, but the tips of their bills are yellow. They have long forked tails.

The black-naped tern has a white face and breast with a grayish-white back and wings. The first couple of their primary feathers are gray.

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Scientific classification

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Charadriiformes
Family
Sternidae
Genus
Sterna
Species
Sterna sumatrana

Common names

  • English: Black-naped tern
  • French: Sterne diamant
  • Thai: นกนางนวลแกลบท้ายทอยดำ, nok naang-nuan klaep thai-thoy dam

Subspecies

  • Sterna sumatrana mathewsi, Erwin Stresemann, 1914

    Range: Islands of the western Indian Ocean

  • Sterna sumatrana sumatrana, Thomas Stamford Raffles, 1822

    Range: Islands of the eastern Indian Ocean through to the western Pacific & Australasia

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Distribution map of Black-naped tern, Sterna sumatrana in Thailand
  • Bang Pu Recreation Centre
  • Hat Noppharat Thara - Mu Ko Phi Phi National Park
  • Kamphaeng Saen District, Nakhon Pathom
  • Khao Laem Ya National Park
  • Khao Sam Roi Yot National Park
  • Khura Buri District, Phang Nga
  • Klaeng District, Rayong
  • Ko Samui District, Surat Thani
  • Ko Sichang District, Chonburi
  • Ko Tao
  • Laem Pak Bia
  • Mu Ko Similan National Park
  • Mu Ko Surin National Park
  • Mueang Chonburi District, Chonburi
  • Mueang Krabi District, Krabi
  • Mueang Phang Nga District, Phang Nga
  • Mueang Phuket District, Phuket
  • Mueang Samut Sakhon District, Samut Sakhon
  • Pak Thale
  • Samae San Island
  • Sathing Phra District, Songkhla
  • Sattahip District, Chonburi
  • Si Racha District, Chonburi
  • Takua Pa District, Phang Nga
  • Tarutao National Marine Park
  • Thale Noi Non-hunting Area
  • Than Sadet - Koh Pha-Ngan National Park

Range map of Sterna sumatrana in Thailand

Important note; our range maps are based on limited data we have collected. The data is not necessarily accurate or complete.

Special thanks to Ton Smits and Parinya Pawangkhanant for their help with many range data.

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