This is a genus generally admitted, hut distinguished from Anas by characters of secondary importance. The bill is similar in shape, though smaller, and the lamellae are more developed. The speculum is black and white. Tail of 16 feathers.
One species with a wide range occurs in India. The only other species referred to the genus is very little known.
BookTitle:
The Fauna Of British India, Including Ceylon And Burma-birds
Reference:
Blanford, William Thomas, ed. The Fauna of British India: Including Ceylon and Burma. Vol. 4. 1898.
Title in Book:
Genus CHAULELASMUS
Year:
1898
Page No:
440
M_ID:
407
M_SN:
Anas
Volume:
Vol. 4
Term name:
id:
2330
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