
Photo: egorbirder · CC BY 4.0 (May be cropped or resized)
Tadorna ferruginea
Range
Breeds in south-eastern Europe and central Asia; winters in the Indian subcontinent
Clutch size
About 8 eggs
Incubation period
About 4 weeks
Size
58–70cm
Wingspan
110–135cm
The ruddy shelduck is a distinctive waterfowl 58 to 70cm long with a wingspan of 110 to 135cm. A clutch of about eight eggs is laid and incubated solely by the female for about four weeks, with the male standing in attendance nearby (Wikipedia, general species account).
The sources opened give only these figures for the Bhutan guide and say nothing on where it occurs in Bhutan, its habitat or its diet.