Pseudochelidon sirintarae
The White-eyed River Martin, *Pseudochelidon sirintarae*, is one of the world's most enigmatic and possibly extinct avian species. Measuring approximately 13-14 cm (5-5.5 inches) in body length, it is distinguished by its striking glossy blue-black to purplish-black plumage, which contrasts sharply with a prominent white eye-ring and a bright red bill. Its most unique feature is the two elongated, slender central tail feathers, which can extend an additional 9 cm (3.5 inches) beyond the rest ...
Known primarily from freshwater lakes with large reed beds, particularly roosting on sandbars within lakes or rivers in lowland tropical areas. Breeding habitat remains entirely unknown, but speculated to be in limestone karst or caves.
Strictly insectivorous, feeding primarily on aerial insects caught during flight over water or wetland areas, likely including various beetles, flies, and moths.
Due to its extreme rarity and presumed extinction, most behavioral patterns of the White-eyed River Martin remain largely unknown. Observations during its brief documented period suggest it was primarily crepuscular, with peak activity at dawn and dusk, potentially roosting communally in large re...
The White-eyed River Martin's known range is incredibly restricted and historical. All reliable records originate from a single location: Bueng Boraphet, a large freshwater lake in Nakhon Sawan Province, central Thailand. Here, individuals were observed during the non-breeding season, specificall...
Critically Endangered
- The White-eyed River Martin was only discovered in 1968 by Thai ornithologist Kitti Thonglongya. - It is named after Princess Sirindhorn of Thailand, reflecting its royal connection and national pride. - No confirmed sightings have occurred since 1980, making it one of the most enigmatic and po...