IUCN threat status:

Critically Endangered (CR)

Distribution

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Range Description

Eurochelidon sirintarae is only known as a probable non-breeding visitor to one area of central Thailand (BirdLife International 2001). It was discovered in 1968, at or near Beung Boraphet lake, near the town of Nakhon Sawan. It is known from 12 specimens collected amongst roosts of wintering hirundines, with rumours of many more sold in local markets, one field observation at Beung Boraphet in 1978, and two unconfirmed reports, the last of which was in 1986. Its population must be tiny and the lack of reliable records for over 20 years strongly suggests that it has undergone a decline. The species may be extant within South-East Asia, where survey effort has increased in recent years. There have been unconfirmed reports from Cambodia recently where potentially suitable habitat remains (Anon 2006), but searches in the Sre Ambel area in March-April 2008 failed to find the species, and the habitat was degraded and apparently unsuitable (Seng Kim Hout 2008). Myanmar may be a more likely refuge of any remaining population.

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Source: IUCN

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