A Manual of Philippine Birds - Richard C. McGregor

I have not seen a full description of this species; it is usually compared with A. magnirostris, but its very long first primary would seem to be a character sufficient to prevent its being mistaken for either of the other species found in the Philippine Islands.

Genus HORORNIS Hodgson, 1845.

Bill short and stout with a small notch near the tip; rictal bristles few and well developed, a few short bristles in front of them; some feathers of forehead and chin with long bristle-like shafts; wing moderate to short, somewhat pointed, or else rounded, either shorter or longer than tail; first primary well developed but much (one-third to one-half) shorter than second, the latter considerably shorter than third; tail strongly rounded; tarsus and feet strong, hind toe and claw heavy; bill from nostril, less than one-half the tarsus, and equal to the hind toe without claw. Colors earthy brown, buff, and white; spots and bars entirely wanting.

Species.

a¹. Larger, wing more than 70 mm. canturians (p. [587])
a². Smaller, wing less than 65 mm.
- b¹. Fourth and fifth primaries nearly equal and longest; wing longer and about equal to tail. minutus (p. [587])
- b². Fifth and sixth primaries nearly equal and longest; wing shorter and much shorter than tail seebohmi (p. [588])

571. HORORNIS CANTURIANS (Swinhoe).

CHINESE BUSH WARBLER.

Arundinax canturians Swinhoe, Ibis (1860), 52.
Cettia canturiens Seebohm, Cat. Birds Brit. Mus. (1881), 5, 141; Whitehead, Ibis (1899), 211 (winter).
Horornis canturians Sharpe, Hand-List (1903), 4, 236; Oates and Reid, Cat. Birds’ Eggs (1905), 4, 238.
Horornis canturiens McGregor and Worcester, Hand-List (1906), 90.

Apo (Celestino); Calayan (McGregor); Luzon (Whitehead, McGregor). Southern Ussuri Land to Lake Chanka, Formosa; in winter to Cachar and southern China.

Adult.—Above nearly uniform wood-brown; lighter on rump and tail-coverts; a dusky spot before and behind eye; eyelids white; a whitish line from bill over eye to nape; cheeks and ear-coverts buffy brown; under parts white, washed with buff on sides, flanks, crissum, and across fore breast; thighs slate-gray; wings brown, the feathers edged with russet; tail brown; axillars, wing-lining, edge of wing, and inner edges of quills white. Iris brown; bill dark brown above and light below; legs light horn. A male from Calayan measures: Length, 170; wing, 77; tail, 75; culmen from base, 16; bill from nostril, 9; tarsus, 27.