
Photo: cuatrok77 · CC BY-SA 4.0 (May be cropped or resized)
Ducula aenea
Habitat
Stick nest in a tree
Clutch size
A single white egg
The green imperial pigeon builds a stick nest in a tree and lays a single white egg (Wikipedia, general species account).
That one sentence is the only readable source for the Bhutan guide. No plumage, size, range, habitat or diet information was found, so none is stated, and the entry is kept as short as the evidence allows.