
Photo: Ульяна Лалак · CC BY 4.0 (May be cropped or resized)
Ichthyaetus ichthyaetus
Habitat
Nests on the ground
Clutch size
2–4 eggs
Size
55–72cm
Wingspan
142–170cm
Weight
0.96–2.1kg
Pallas's gull is a large gull, 55 to 72cm long with a wingspan of 142 to 170cm. Weight varies from 0.96 to 2.1kg, averaging 1.6kg in males and 1.22kg in females. It nests on the ground and lays between two and four eggs (Wikipedia, general species account).
The only source read for the Bhutan guide gives these measurements and nesting details. No plumage, range, habitat or diet information was found, so none is stated, and its occurrence in Bhutan is flagged for checking.