The pin-tailed green pigeon or pin-tailed pigeon (Treron apicauda) is a species of bird in the family Columbidae native to Southeast Asia.

Quick Facts Conservation status, Scientific classification ...

Pin-tailed green pigeon
Species Treron apicauda apicauda from Ghatgarh village of Nainital district of Uttarakhand, India
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Columbiformes
Family:	Columbidae
Genus:	Treron
Species:	T. apicauda
Binomial name
Treron apicauda Blyth, 1846

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The pin-tailed green pigeon is a medium sized dove, with an average weight of 185-255 grams. Males are 32-36 cm and females are typically 28 cm. It is yellow-green overall, with darker green wing-coverts and scapulars and black outer secondaries and primaries. The males have a golden breast with pinkish hues. The central tail feathers are a bluish-gray and the undertail-coverts a chestnut color. The orbital ring is blue, as is the bill, with a lighter green or yellow tip. The legs and feet are a bright reddish-pink. The females are a duller yellow, with much shorter central tail feathers and dull undertail-coverts. ^[2]

The song is described as a soft whistling ku-koo, which is usually paired. The pin-tailed green pigeon also lets out a high pitched doo! call. While in flight, feathers produce a whirring sound. ^[2]

The pin-tailed green pigeon was first described by Edward Blyth in 1846. ^[3] The species' generic name comes from the Greek trērōn (timid, shy dove),^[4] while the specific epithet apicauda is derived from a combination of the Latin apicis (apex or point)^{[citation needed]} and the Latin cauda (tail). ^[5] The pin-tailed green pigeon was placed in the genus Sphenerus in the past. ^[2]

The pin-tailed green pigeon is found in Bangladesh, Bhutan, Cambodia, China, India, Laos, Myanmar, Nepal, Thailand, and Vietnam. ^[8] It inhabits secondary growth and forest, including foothill forests, subtropical and tropical dry forest, and evergreen rainforest. It typically inhabits areas 0 to 1800 meters in elevation. ^[9]

Pin-tailed green pigeons are resident birds in some parts of their range, and nomadic in other parts in response to food resources. ^[10] In central Vietnam, they will descend to lower elevations during the dry season, which is when many trees are fruiting.

The pin-tailed green pigeon was assessed by the IUCN in 2018 and was listed as a species of least concern, though the population trend is decreasing. ^[9] Species is thought to be common across much of its range, though sightings are limited. Scarce in Thailand, and reported as very rare in Bangladesh. ^[2]