Hypolais obsoleta

Hypolais obsoleta, Severtz.

Murray's Vertebrate Zoology of Sind, p. 158.

THE DESERT TREE WARBLER.

Wing, 2.4 ; tail, 2; culmen, 0.8.

The general color of the upper parts is a sandy-brown or pale isabelline-brown; in other respects the coloration is that of the two or three preceding species or sub-species ; third and fourth primaries nearly equal and longest; second primary, in a skin from Turkestan, intermediate in length between the sixth and seventh, and in one from Sind between the seventh and eighth ; the bastard primary exceeds the primary-coverts by 0.35 inches in both skins.

This Warbler has been procured in Sind, but is very rare. The following key, originally published in Vol. V, Cat. Br. Mus., may prove useful in discriminating the foregoing: :-

A. General color of the upper parts brown or grey; under

parts white or pale brown ; outside tail-feathers 0.15 to 0.2 inches shorter than the longest. (a) Second primary intermediate between the fifth and sixth; bastard primary falling short of the primary-covert by 0.1 inches, or extending 0.05 beyond them. Lengths of wing, 2.8 to 3.05 inches.

H. LANGUIDA.
B. Bastard primary exceeding the primary coverts by at least 01 inch.
(a) General color of the upper parts sandy or isabelline-brown.
H. OBSOLETA.
C. General color of the upper parts darkish rufous-brown or grey.
(a) Second primary generally intermediate between the
fifth and sixth ; bastard primary exceeding the primary coverts from 0.1 to 0.3 inches. Length of wing, 2.75 to 2.5 inches.
H. PALLIDA.
(b) Second primary generally intermediate between the seventh and eighth, or eighth and ninth ; bastard primary exceeding the primary-coverts from 0.2 to 0.4 inches. Length of wing, 2.53 to 2.3 inches ; culmen, 0.6 to 0.53.
H. RAMA.
(c) Second primary generally intermediate between the sixth and seventh; bastard primary exceeding the primary coverts 0.15 to 0.26. Length of wing, 2.38 to 2 28 inches ; culmen, 0.51 to 0.5.
H. CALIGATA.

BookTitle: 
Handbook to the Birds of the Bombay Presidency
Reference: 
Barnes, Henry Edwin. Handbook to the birds of the Bombay Presidency, 1885.
Title in Book: 
Hypolais obsoleta
Spp Author: 
Severtz.
Book Author: 
Barnes, H. Edwin
Year: 
1885
Page No: 
225
Common name: 
Desert Tree Warbler
id: 
11698

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