Criniger haynaldi Blasius, Jour. für Orn. (1890), 143.
Iole haynaldi Sharpe, Ibis (1894), 253; Hand-List (1901), 3, 313;
McGregor and Worcester, Hand-List (1906), 79.
Bongao (Everett); Sibutu (Everett); Sulu (Platen, Bourns &
Worcester); Tawi Tawi (Bourns & Worcester).
Adult.--Similar to Iole everetti, but smaller and the upper parts
darker and browner; wings much darker, their exposed webs olive-brown;
edges of rectrices darker; under parts lighter yellow; axillars and
wing-lining pale yellow. A male measures: Wing, 109; tail, 100; culmen
from base, 29; bill from nostril, 18; tarsus, 20. A female, wing, 104;
tail, 100; culmen from base, 29; bill from nostril, 18; tarsus, 21.
"Haynald's yellow bulbul is extremely abundant in Sulu and Tawi
Tawi. It is a woods bird which does not seem to come out into the
open. Fifteen males average: Length, 240; wing, 108; tail, 99; culmen,
27; tarsus, 19; middle toe with claw, 23. Twelve females average,
length, 232; wing, 106; tail, 98; culmen, 27; tarsus, 19; middle toe
with claw, 22. Iris reddish brown; legs, feet, and nails light brown
to slaty brown; upper mandible black, lower leaden gray." (Bourns
and Worcester MS.)