522. BRACHYPTERYX MINDANENSIS Mearns.
MINDANAO SHORTWING.

Boor-roo-win′g, Bagobos of Mount Apo.

Mindanao (Mearns, Goodfellow).

Adult male.—Similar to the male of B. brunneiceps, but larger and apparently less heavily washed with black on the top of the head and throat. Belly without a trace of grayish wash present in B. poliogyna from the Island of Luzon. Measurements of No. 192,256, U. S. National Museum, from Mount Apo at 1,920 meters, July 4, 1904. Total length, 158; alar expanse, 220; wing, 70; tail, 62; bill from base of culmen, 14; bill from nostril, 9.5; tarsus, 33; middle toe with claw, 23. Iris dark brown; bill, feet, and claws gray-black, darker than plumage.

Adult female.—Similar to the female of B. brunneiceps, but differs in addition to its larger size and relatively longer tail, in having the abdomen washed with brownish gray. The wing-quills and spurious wing are brown. Measurements of type: Length, 158; alar expanse, 212; wing, 70; tail, 56; bill from base of culmen, 14; bill from nostril, 9; tarsus, 31; middle toe with claw, 24. Iris dark brown; bill, feet, and claws dark gray.

Young male in first plumage.—Slate-colored feathers of the adult plumage are present in the greater wing-coverts and pectoral region of the specimen (No. 192,257, U. S. National Museum, from Todava, at 1,220 meters, on Mount Apo, July 11, 1904). General color clove-brown, the feathers slaty at base, all but the quills with russet shaft-spots, which are small and triangular on the back, and so extended as to give a general russet tone to the abdomen. Iris brown; bill and feet gray-black. Length, 155; alar expanse, 218; wing, 70; tail, 50; bill from base of culmen, 13; bill from nostril, 8.6; tarsus, 33; middle toe with claw, 22.

“The name ‘boor-roo-wi′ng,’ used by the native Bagobos, is in imitation of the lisping notes of this bird, which suggest sounds of the winds.” (Mearns.)

523. BRACHYPTERYX MALINDANGENSIS Mearns.