Species of Thailand
Binomial name: Dendrocitta formosae, Robert Swinhoe, 1863
The grey treepie, also known as the Himalayan treepie, (Dendrocitta formosae) is an Asian treepie, a medium-sized and long-tailed member of the crow family. They are widely distributed along the foothills of the Himalayas in South Asia and extending into Indochina, southern mainland China and Taiwan. The populations vary in plumage and several are named as subspecies.
Grey treepies are omnivorous birds mostly thriving among dense foliage and in forests. They sometimes take part in mixed species flocks with laughingthrushes, especially the White-throated. Systematically together working through the hill forests, rhododendrons, oaks and other broad leaved trees, especially in the mornings.
It is the same size as other Dendrocitta species and is separated from them by the overall grey colour of the body. The races in the western part of the distribution have a greyish rump and some grey in tail while the eastern forms have a white rump and a black tail. The face and throat are dark and black with a diffuse mask. The body is grey on the underside becoming whiter towards the vent. The back and scapulars are brownish. The crown and nape are greyish and the black wing has a prominent white carpal patch. The vent is rufous and the outer tail feathers and tips of the central feathers are black.
The species occupies a large geographical range and has several recognised regional forms that differ slightly from one another for instance in colour and tail length. These include occidentalis of the western Himalayan foothills (identified by its slightly longer tail), himalayana from the central Himalayas east into Thailand and Vietnam. A disjunct population, said to have a smaller or narrower bill, is found in the Eastern Ghats of peninsular India, sarkari, that is sometimes subsumed into himalayana. The Southeast Asian races include assimilis, sapiens, sinica, formosae (the nominate race from Taiwan) and insulae (Hainan Island).
It has been suggested that this species forms a superspecies along with Dendrocitta occipitalis and Dendrocitta cinerascens.
Distribution and habitat
The grey treepie is largely arboreal and is found in a wide range of habitats including forest, cultivation and human habitation. The distribution range includes India, Nepal, Assam, Burma (Myanmar), Thailand, southern Tibet, Taiwan and Indochina.
Behaviour and ecology
This treepie is mostly an arboreal feeder but will take some food from the ground especially in cultivated regions. A wide range of insects and other invertebrates are taken including berries, nectar, grain and other seeds and also small reptiles, eggs and nestlings. It sometimes joins mixed-species foraging flocks.
In the foothills of the Himalayas in India, they are known to breeds from 2000 to 6000 feet mainly during the months of May to July. The nest is a shallow cup lined with hair and is built in trees and bushes or clumps of bamboo with 3-4 eggs per clutch.
The voice is described as harsh and grating, but like other species is quite varied and includes a grating k-r-r-r-r sound as well as more melodious notes not unlike those of the rufous treepie. These include a tiddly-aye-kok, ko-ku-la and barking braap...braap...braap calls.
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- Dendrocitta formosae
- Dendrocitta himalayensis
Least Concern (IUCN3.1)
- Chae Son National Park
- Chiang Dao Wildlife Sanctuary
- Doi Inthanon National Park
- Doi Lang
- Doi Pha Hom Pok National Park
- Doi Phu Kha National Park
- Doi Saket District, Chiang Mai
- Doi Suthep-Pui National Park
- Huai Nam Dang National Park
- Kaeng Krachan National Park
- Khun Nan National Park
- Mae Moei National Park
- Mae Ping National Park
- Mae Rim District, Chiang Mai
- Mae Wong National Park
- Mueang Chiang Mai District, Chiang Mai
- Nam Nao National Park
- Omkoi Wildlife Sanctuary
- Pa Sang District, Lamphun
- Pha Daeng National Park
- Phu Hin Rong Kla National Park
- Phu Khiao Wildlife Sanctuary
- Phu Luang Wildlife Sanctuary
- Phu Suan Sai National Park
- Taksin Maharat National Park
- Thong Pha Phum National Park
- Thung Yai Naresuan Wildlife Sanctuary
- Umphang Wildlife Sanctuary
Range map of Dendrocitta formosae in Thailand
Important note; our range maps are based on limited data we have collected. The data is not necessarily accurate or complete.
Special thanks to Ton Smits, Parinya Pawangkhanant, Ian Dugdale and many others for their contribution for range data.
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