Zosterops nigrorum Tweeddale, Proc. Zool. Soc. (1878), 286;
Gadow, Cat. Birds Brit. Mus. (1884), 9, 186; Whitehead, Ibis
(1899), 232 (habits); McGregor and Worcester, Hand-List (1906), 95.
Cresta de Gallo (McGregor); Masbate (Bourns & Worcester, McGregor);
Negros (Everett, Steere Exp., Bourns & Worcester, Whitehead);
Panay, (Steere Exp., Bourns & Worcester); Ticao (McGregor).
Adult.--Similar to Z. aureiloris. Above dark olive-yellow; frontal
band and lores bright lemon-yellow; a black line under eye; eye-ring
interrupted in front by a small black spot; sides of head and neck
like the back; chin and throat lemon-yellow, becoming more greenish
on breast and abdomen. In general color this species is much greener
than Z. aureiloris or other related species. Iris greenish white;
bill dark above, bluish horn-color below; legs plumbeous; nails
light horn-color. A male from Masbate measures: Length, 114; wing,
53; tail, 37; culmen from base, 12; bill from nostril, 8; tarsus,
15. A female from Masbate, wing, 52; tail, 36; culmen from base, 12;
bill from nostril, 7.5; tarsus, 15.
"Found in abundance about flowering trees in the forest together with
sunbirds and Dicæidæ. Ten males average: Length, 114; wing, 55; tail,
40; culmen, 14; tarsus, 15; middle toe with claw, 14.4. Nine females,
length, 111; wing, 53.5; tail, 39; culmen, 13.7; tarsus, 14.4; middle
toe with claw, 14. Iris light brown; legs and feet pale slaty; bill
same color. Breeding in Negros in the month of January." (Bourns and
Worcester MS.)