Thai National Parks

Species of Thailand

Von schrenck's bittern

Ixobrychus eurhythmus

Robert Swinhoe, 1873

In Thai: นกยางไฟหัวเทา

Von Schrenck's bittern (Ixobrychus eurhythmus), also known as Schrenck's bittern, is a small bittern. It breeds in China and Siberia from March to July, and Japan from May to August. It winters in Indonesia, Philippines, Singapore, Laos, passing through the rest of South-east Asia. It is an exceptionally rare vagrant as far west as Europe, with a single sighting in Italy in 1912. It is named after Leopold von Schrenck, the 19th-century Russian naturalist.

This is a small species at 33 to 38 cm in length, with a short neck, longish yellow bill and yellow legs. The male is uniformly chestnut above, and buff below and on the wing coverts. The female and juvenile are chestnut all over with white speckles above, and white streaks below. When in flight, it shows black flight feathers and tail.

Their breeding habitat is reed beds. They can be difficult to see, given their skulking lifestyle and reed bed habitat, but tend to emerge at dusk, when they can be seen creeping almost cat-like in search of preys.

Widespread throughout its large range, Von Schrenck's bittern is evaluated as Least Concern on the IUCN Red List of Threatened Species.

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Category / Seasonal Status

Wiki listed status (concerning Thai population): Passage migrant

BCST Category: Recorded in an apparently wild state within the last 50 years

BCST Seasonal status: Non-breeding visitor

Scientific classification

Ixobrychus eurhythmus

Common names

  • English:
    • Schrenck's bittern
    • Schrenck's little bittern
    • Von Schrenck's bittern
  • Thai: นกยางไฟหัวเทา

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)


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Von schrenck's bittern
Von schrenck's bittern

Range Map

Distribution map of Von schrenck's bittern, Ixobrychus eurhythmus in Thailand
  • Ao Phang-Nga National Park
  • Hat Yai District, Songkhla
  • Kaeng Krachan National Park
  • Khao Sam Roi Yot National Park
  • Khao Sok National Park
  • Khao Yai National Park
  • Kromluang Chumphon Wildlife Sanctuary
  • Kui Buri National Park
  • Pran Buri District, Prachuap Khiri Khan
  • Surin Islands
Range map of Ixobrychus eurhythmus in Thailand