Buceros leucocephalus Vieillot, Nov. Dict. d' Hist. Nat. (1816),
4, 592.
Craniorrhinus leucocephalus Walden, Trans. Zool. Soc. (1875), 9,
165, pl. 27.
Cranorrhinus leucocephalus Grant, Cat. Birds Brit. Mus. (1892),
17, 378; Sharpe, Hand-List (1900), 2, 65; McGregor and Worcester,
Hand-List (1906), 56.
Camiguin S. (Cuming); Mindanao (Steere, Everett, Koch &
Schadenberg, Steere Exp., Bourns & Worcester, Clemens, Goodfellow,
Celestino).
"Adult male.--Occiput, nape, and back of neck deep chestnut; rest of
head, neck, and upper chest buff; tail white, with a terminal black
band; rest of plumage black, glossed with dark bluish green. Naked
skin round eye and on chin and throat fiery orange-red; iris crimson;
feet dull black; bill and casque deep red; lower mandible crossed at
the base by four or more obliquely transverse ridges, the basal one
being dark red, the rest whitish and separated from one another by
brown grooves; casque with numerous transverse folds. Length, 737;
wing, 335; tail, 244; tarsus, 51."
"Adult female.--Differs from the male in having the plumage of head
and neck dark shining black, and the casque smooth. Length, 597;
wing, 302; tail, 22; tarsus, 46." (Grant.)
"Common in Mindanao. Seems not to occur in Basilan. Frequents the
highest trees and feeds on fruit. Eyes red; legs black; tops of feet
black, bottoms yellowish; bill dark scarlet. A male measures, 711
in length; wing, 319; tail, 232; tarsus, 50; middle toe with claw,
54." (Bourns and Worcester MS.)
When new the tail-feathers are white but they soon turn light
buff. The male is much larger than the female and has a larger
casque. A male from northern Mindanao is 762 in length; wing, 360;
tail, 235; bill from nostril, 126; length of casque at base, 76;
tarsus, 50. A female is 620 in length; wing, 290;, tail, 220; bill
from nostril, 89; length of casque at base, 57; tarsus, 49.