
Photo: Ron Pasieczna · CC BY 4.0 (May be cropped or resized)
Anas platyrhynchos
Clutch size
8–13 eggs
Size
50–65cm
Wingspan
81–98cm
Weight
0.7–1.6kg
The mallard is 50 to 65cm long with a wingspan of 81 to 98cm, and is often slightly heavier than most other dabbling ducks, at 0.7 to 1.6kg. The bill is 4.4 to 6.1cm long. The female lays 8 to 13 creamy white to greenish-buff spotless eggs, on alternate days (Wikipedia, general species account).
The sources opened for the Bhutan guide give only these measurements and egg details, with nothing on plumage, range, habitat or diet, so none is stated. The entry is kept short on purpose.