Eurasian Coot

The Eurasian coot is 36 to 38cm long with a wingspan of 70 to 80cm; males weigh about 890g and females about 750g. The juvenile is paler than the adult, with a whitish breast and no facial shield. The adult black plumage develops at about three to four months old, but the white shield is only fully developed at about a year old (Wikipedia, general species account).

The only source read for the Bhutan guide gives these measurements and the juvenile plumage. No range, habitat, diet or breeding information was found, so none is stated, and the entry is kept short.