Treron sieboldii

The red-winged green pigeon is a medium-sized bird. The forehead and eyes of the male bird are bright olive yellow, and the top of the head is olive with a slight orange-brown embellishment. The sides of the head and the back of the neck are grayish yellow-green, and the neck is grayer, often forming a band-like spot. The rest of the upper body and the inner side of the wings are olive green. Some individuals have chestnut red on their upper backs. The flight feathers and large coverts on the wings are black, with large purple-red chestnut spots, and the yellow feather edges of the large coverts and secondary flight feathers are wider, forming two wing spots. The central pair of tail feathers is olive green, and the rest of the tail feathers on both sides are gray-green to gray-black from the inside to the outside, and have black secondary terminal spots and narrow gray-green terminal spots, forming black edges on both sides of the tail feathers. The forehead and throat are bright yell

Distributed in China, Japan, the Republic of Korea, the Lao People's Democratic Republic, Thailand, Vietnam and other places.
In China, it is distributed from the Qinling Mountains to the south of the Yangtze River estuary and west to the southwest of Yunnan. It is a resident bird, including Foping and Taibai in the Qinling Mountains of Shaanxi, Nanchuan and Chengkou in Sichuan, Suiyang, Zunyi, Guiyang in Guizhou, Longjin in Guangxi, Qiongzhong in Hainan and Taiwan.
The red-winged green pigeon is a resident bird, and only a small number of them migrate. It inhabits mountain coniferous forests and mixed coniferous and broad-leaved forests below 2,000 meters above sea level, and is sometimes seen in cultivated land at the edge of the forest.

The foreign name of the Red-winged Green-pigeon is White-bellied Green-pigeon, and there are 4 subspecies.

The Red-winged Green-pigeon often moves in small groups or alone. It flies fast and straight, and can suddenly change direction during flight. When flying, its wings flap quickly and powerfully, and you can often hear the sound of "whoosh" flapping wings. The chirping sound is very similar to the cry of a child. It mainly feeds on berries such as mountain cherries and strawberries, and also eats fruits and seeds of other plants. It forages mostly on trees and shrubs, and also on the ground.

The call of the red-winged green pigeon: round wu-wua wu, wu-wua wu or ah oh ah oh.

The breeding season of the red-winged green pigeon is May-June. It nests in trees beside ravines or river valleys. The nest is flat and basin-shaped, very simple, mainly made of dead branches, and 2 eggs are laid in each nest. The eggs are white, smooth and spotless. The crop of a pigeon is a spherical bag formed by the expansion of the middle section of the esophagus wall to one side before the esophagus enters the body cavity. It is located between the anterior esophagus and the posterior esophagus. Its inner cavity can be divided into two side sacs on the left and right. The sac wall is thinner and slightly thicker than the anterior esophagus. It is located in the triangular area formed by two bird coracoids in front of the chest, and the rear edge is close to the front edge of the pectoral muscle. The front is close to the skin muscle under the dermis of the skin. The skin muscle can play the role of continuously compressing the crop and vomiting the feed in the crop into the chicks.

Listed in the 2013 Red List of Endangered Species of the World Conservation Union (IUCN) ver 3.1 - Least Concern (LC).

Listed in the second level of the "List of National Key Protected Wildlife in China".

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