
Photo: Imran Shah · CC BY-SA 4.0 (May be cropped or resized)
Actitis hypoleucos
Size
18–20cm
Wingspan
32–35cm
The common sandpiper is a small wader, the adult 18 to 20cm long with a wingspan of 32 to 35cm (Wikipedia, general species account).
That single measurement is all the source read for the Bhutan guide gives. No plumage, range, habitat, diet or breeding information was found, so none is stated, and the entry is kept as short as the evidence allows.