
Photo: Parth Kansara · CC BY 4.0 (May be cropped or resized)
Orthotomus sutorius
Clutch size
Usually 3 eggs
Incubation period
About 12 days; young fledge in about 14 days
The usual clutch of the common tailorbird is three eggs, with an incubation period of about 12 days, and the young fledge in about 14 days. Mortality of eggs and chicks is high, due to predation by rodents, cats, crow-pheasants, lizards and other predators (Wikipedia, general species account).
The female alone incubates according to some sources, while others suggest both sexes do, and both parents take part in feeding and sanitation. The source read for the Bhutan guide gives no plumage, range, habitat or diet information, so none is stated, and its occurrence in Bhutan is flagged for checking.