Genus AMAURORNIS

The members of this genus are distinguished from both Porzana and Gallinula by having a more rounded wing, with the 3rd quill longest, the 2nd equal to the 5th or 6th, and the 1st much shorter. The species are also distinguished at once from Porzana by very different and much more uniform plumage. The bill is of moderate length, much shorter than the tarsus, which is shorter than the middle toe and claw.

The type of the genus, A. olivaceus, a Philippine species, has the upper mandible slightly swollen at the base, and the same is the case in A. phoenicurus { but in Coloration A. olivaceus is perfectly intermediate between A. phoenicurus and A. akool, which cannot be separated from A. fuscus and A. bicolor. The difference in the bill appears scarcely sufficient to justify generic separation, though, if a division is made, A. bicolor and A. akool should, I think, be referred to Limnobcenus, of which A. fuscus is the type.

The genus Amaurornis, as here accepted, ranges throughout the Oriental region to North Australia. Pour species are Indian.

Key to the Species.

a. Breast grey or rufous; bill not swollen at base.
a1. Breast in adults vinous chestnut, in young dark olive……………………A. fuscus, p. 170.
b1. Breast dark grey.
a2. Back rufous brown……………………A. bicolor, p. 171.
b2. Back dark olive……………………A. akool, p. 172.
b. Breast white; bill swollen at base……………………A phoenicurus, p. 178.

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 AMAURORNIS
Book Author: 
William Thomas Blanford
Year: 
1898
Page No: 
170
M_ID: 
3630
M_SN: 
Porzana
Volume: 
Vol. 4
Term name: 
id: 
1993

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