
Photo: Tisha Mukherjee · CC BY-SA 4.0 (May be cropped or resized)
Phylloscopus castaniceps
Diet
Primarily insects; arboreal
Habitat
Subtropical or tropical moist lowland and moist montane forest; small seasonal movements to higher or lower elevations
Range
Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand and Vietnam
The chestnut-crowned warbler is a leaf warbler found in Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand and Vietnam. Its natural habitats are subtropical or tropical moist lowland forest and moist montane forest. Nine subspecies are recognised, and it forms a superspecies with the Sunda warbler and the yellow-breasted warbler (Wikipedia, general species account).
It is arboreal and primarily insectivorous. Though not considered migratory, it may make small seasonal movements to higher or lower elevations. The source read gives no plumage, size or breeding information, so none is stated.