Pink-headed Duck

Allan Octavian Hume and Stuart Baker noted that the stronghold of the species was north of the Ganges and west of the Brahmaputra, mainly in Maldah, Purnea, Madhubani and Purulia districts of present-day Bihar. It was said to be commoner in Singhbum. Hume collected a specimen in Manipur which he noted was very rare, hiding among dense reeds in Loktak Lake. Edward Blyth claimed that it was found in the Arakan state of Burma. Brian Houghton Hodgson obtained specimens from Nepal. A few records were also noted from Delhi, Sindh and Punjab. Birds were also reported from the Oudh region some from very close to Lucknow. Specimens were shot at Najafgarh lake in the Delhi district. Jerdon obtained specimens of the bird from further south although he did not personally observe any in the wild until he visited Bengal.

This duck formerly occurred in eastern India, Bangladesh and northern Myanmar, but is now probably extinct. It was always rare, and the last confirmed sighting, by C. M. Inglis, was from Bhagownie, Darbhangha District, in June 1935, with reports from India persisting until the early 1960s. These include reports from Monghyr and from near Simla. Sidney Dillon Ripley considered it likely extinct in 1950. In 1988, Rory Nugent, an American birder, and Shankar Barua of Delhi, reported spotting the elusive bird on the banks of the Brahmaputra. The pair started their quest for the bird at Saikhoa ghat on the north-eastern end of the river on the Indian side of the border. After 29 days of sailing, Nugent said that he saw the pink-headed duck amidst a flock of other waterbirds. However, Nugent and Barua's claimed sighting has not been widely accepted. Reports of pink-headed ducks after the 1960s have been received from the largely unexplored Mali Hka and Chindwin Myit drainages in Northern Myanmar. While the area is not very well surveyed by scientists, searches have been inconclusive and confusion with the red-crested pochard and the Indian spot-billed duck has been a common source of supposed pink-headed duck sightings. A report on a survey in the Hu Kaung valley in November 2003 concluded that there is sufficient reason to believe that pink-headed ducks may still exist in Northern Myanmar's Kachin State, but a thorough survey of the Nat Kaung river between Kamaing and Shadusup in October 2005 failed to find this species; a number of interesting ducks were observed, but they turned out to be Indian spot-billed ducks or white-winged ducks. Suggestions have been made that it may be nocturnal. In 2017, an expedition to find the species by Global Wildlife Conservation also failed, with evidence indicating that the biodiversity in the general area around Indawgyi Lake and its surrounding areas was heavily declining due to habitat degradation. Anecdotes from residents in the area, however, indicate that the bird may have lived in the area far more recently than the last confirmed report from 1910, possibly as recently as 2010. One resident stated that a pink-headed duck was sighted in 1998, associating with a flock of gadwall and pintail. Another, more dubious report stated that shortly after a failed expedition in the area by Birdlife International ended, a local hunter caught a live male and a female or juvenile pink-headed duck, and contacted Myanmar's Biodiversity and Nature Conservation Association to sell it to them for a fee. The offer was declined, and the hunter killed both ducks. Another hunter recalled that when the habitat was in good condition, pink-headed ducks were regulars in the area, possibly up to 2014. They were apparently most common during February, and he also could mimic their possible calls, though it is unknown whether these calls were truly by pink-headed ducks. The hunter also said that there were large, impassable ponds in the wetland's center that may still hold pink-headed ducks, but these could only be accessed with a drone, which are banned in the region. The reason for its disappearance was probably habitat destruction. It is not known why it was always considered rare, but the rarity is believed to be genuine (and not an artefact of insufficient fieldwork) as its erstwhile habitat was frequently scoured by hunters in Colonial times. The pink-headed duck was much sought after by hunters and later as an ornamental bird, mainly because of its unusual plumage. Like most diving ducks, it was not considered good eating, which should facilitate the survival of any remnant birds. The last specimen was obtained in 1935 in Darbhanga, Bihar, India by C. M. Inglis. Some birds were also kept in the aviaries of Jean Théodore Delacour in Clères (France) and Alfred Ezra at Foxwarren Park (England) where the last known birds lived in captivity. The only known photographs of the species were taken here and include one of a pair taken around 1925 by David Seth-Smith.