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
- Ixobrychus eurhythmus
- Schrenck's bittern
- Schrenck's little bittern
- Von Schrenck's bittern
- Thai: นกยางไฟหัวเทา