About Treron apicauda Blyth, 1846
The pin-tailed green pigeon (Treron apicauda Blyth, 1846) is a medium-sized dove with an average weight of 185 to 255 grams. Males measure 32 to 36 centimeters in length, while females typically reach 28 centimeters. This species is mostly yellow-green overall, with darker green wing-coverts and scapulars, and black outer secondaries and primaries. Males have a golden breast with pinkish tones, bluish-gray central tail feathers, and chestnut-colored undertail-coverts. Both sexes have a blue orbital ring and a blue bill with a lighter green or yellow tip, and bright reddish-pink legs and feet. Females are duller yellow than males, have much shorter central tail feathers, and have dull undertail-coverts. Its song is described as a soft, paired whistling ku-koo. It also produces a high-pitched doo! call, and its feathers make a whirring sound during flight. This pigeon is found in Bangladesh, Bhutan, Cambodia, China, India, Laos, Myanmar, Nepal, Thailand, and Vietnam. It lives in forest and secondary growth, including foothill forests, subtropical and tropical dry forest, and evergreen rainforest, usually at elevations between 0 and 1800 meters. Across its range, pin-tailed green pigeons are resident in some areas and nomadic in others, moving in response to available food resources. In central Vietnam, they descend to lower elevations during the dry season, when many trees produce fruit.
