“Doctor Steere separates the Iole from Panay, Guimaras, and Negros from the Luzon, Samar, Bohol, Cebu, Leyte, and Mindanao birds. He states that I. guimarasensis has the ‘size and general coloring of I. rufigularis, with the light shaft-streaks of I. philippinensis.’ The latter differences would not seem to be of special value in differentiating it from I. philippinensis and we can find nothing in the size or color of our large series of specimens from the central Philippines to warrant us in separating them from typical I. philippinensis [=gularis].
“Steere mentions the very different note of the Cebu birds. We were unable to perceive the slightest difference in the notes of the birds in question and incline to the opinion that the Doctor must have heard the note of I. monticola when he crossed over into Cebu.” (Bourns and Worcester.)
484. IOLE MINDORENSIS Steere.
MINDORO BULBUL.
- Iole mindorensis Steere, List Birds & Mams. Steere Exped. (1890), 19; Grant and Whitehead, Ibis (1898), 238, pl. 5, fig. 2 (egg); Whitehead, Ibis (1899), 215; Sharpe, Hand-List (1901), 3, 314; Oates and Reid, Cat. Birds’ Eggs (1903), 3, 307; McGregor, Bur. Govt. Labs. Manila (1905), 34, 20 (nest and egg); McGregor and Worcester, Hand-List (1906), 79.
Mindoro (Steere Exp., Schmacker, Bourns & Worcester, Whitehead, McGregor, Porter); Semirara (Worcester).
Adult.—Very much like Iole gularis, but chin and throat light drab-brown; whitish shaft-streaks less conspicuous than in either I. gularis or I. guimarasensis; sides of breast and flanks grayer; under parts with fewer streaks of pale yellow. Ten males measure: Wing, 102 to 107 (105); tail, 90 to 99 (95); exposed culmen, 21 to 24 (23); bill from nostril, 15 to 18 (17); tarsus, 18 to 21 (20); Four females, wing, 98 to 99 (98.5); tail, 91 to 95 (92); exposed culmen, 21 to 22 (21.5); bill from nostril, 15 to 16.5 (16); tarsus, 19 to 20 (19.8).
“Quite common in Mindoro. Two males average: Length, 222; wing, 100.5; tail, 91; culmen, 26; tarsus, 19; middle toe with claw, 22. A female, length, 235; wing, 97; tail, 90; culmen, 27; tarsus, 18.5; middle toe with claw, 21. Iris chocolate-brown; bill, legs, feet, and nails leaden.” (Bourns and Worcester MS.)
On April 2, 1905, I collected, in Mindoro, a nest with three eggs of this species. The ground-color of the eggs is white, under shell-markings faint lavender, and entire surface thickly and uniformly marked with elongated and twisted spots of reddish brown. The eggs measure: 26.1 by 18.2, 25.4 by 18, and 25.1 by 19.
The nest was composed of several leaves which were held in place by threads of a black hair-like fungus; cobweb and green moss in small quantities also entered into the construction. The lining consisted of a quantity of long slender fibers.