
Photo: Tom Heijnen · CC BY 4.0 (May be cropped or resized)
Prinia socialis
Habitat
In Sri Lanka mainly lowlands, up to about 1,600m
Range
Resident breeder across most of India, Nepal, Bangladesh, eastern Pakistan, Bhutan, Sri Lanka and western Myanmar
Clutch size
3–5 glossy, somewhat oval eggs
Incubation period
Hatch in about 12 days
Size
13–14cm
The ashy prinia is a resident breeder in the Indian subcontinent, ranging across most of India, Nepal, Bangladesh, eastern Pakistan, Bhutan, Sri Lanka and western Myanmar. It is a small warbler 13 to 14cm long, with short rounded wings and a longish graduated cream tail tipped with black subterminal spots (Wikipedia, general species account).
It lays three to five glossy, somewhat oval eggs, which hatch in about 12 days. In Sri Lanka the population is found mainly in the lowlands but goes up into the hills to about 1,600m; the sources read give no Bhutan-specific altitude or habitat information, so none is stated.