
Photo: Philipp Steidle · CC BY 4.0 (May be cropped or resized)
Artamus fuscus
Clutch size
2–3 greenish-white eggs with brown spots
The ashy woodswallow usually lays two or three greenish-white eggs with brown spots. Both parents take part in nest building, incubation and feeding the young (Wikipedia, general species account).
That is all the source read for the Bhutan guide gives. No plumage, size, range, habitat or diet information was found, so none is stated, and its occurrence in Bhutan is flagged for checking.