368 MANUAL OF PHILIPPINE BIRDS. 
length; wing, 116; tail, 110; culmen, 23; tarsus, 15; middle toe with 
claw, 21. Five females, length, 212; wing, 115; tail, 106; culmen, 23; 
tarsus, 15; middle toe with claw. Bill and nails black; iris black to 
leaden; food insects.” (Bourns and Worcester MS.) 
Genus HIEROCOCCYX S. Miiller, 1839-44. 
Superficially this genus resembles Cuculus but differs by its com- 
paratively shorter primaries and longer secondaries. In plumage and 
flight these cuckoos mimic the smaller Accipitrine hawks, and this prob- 
ably protects them from the attacks of the larger hawks and owls. 
Species. 
a. Breast with distinct blackish brown bars, tip of tail white; wing, 200 mm. 
ah V1 car ae cee sens ene mE ces eae oeeree Gah fe RUE sparverioides (p. 368) 
a*. Breast without bars; tip of tail rufous; wing, 180 mm. or less.... fugax (p. 369) 
331. HIEROCOCCYX SPARVERIOIDES (Vigors). 
ASIATIC HAWK CUCKOO. 
Cuculus sparverioides Vicors, Proc. Zool. Soe. (1831), 173. 
Hierococcyx sparverioides SHELLEY, Cat. Birds Brit. Mus. (1891), 19, 
232. 
Hierococcyx sparveroides SHARPE, Hand-List (1900), 2, 157; McGrEecor 
and WorcESTER, Hand-List (1906), 61. 
Calamianes (Bourns & Worcester) ; Luzon (McGregor) ; Negros (Whitehead) ; 
Palawan (Platen). Malay and Indian Peninsulas, Burmese provinces, eastern 
Siberia, Japan, China, Borneo. 
“Adult.—Above brown with a bronzy gloss, changing gradually into 
gray on the back of the neck and crown; the outer tail-coverts barred 
with white, and the longest ones often with darker ends and narrow 
pale edges; tail with about five distinct dark bars and narrow pale tips 
to the feathers, seldom much shaded with rufous; sides of the head and 
chin gray, with a broad white band from the front of the eye to the 
white on the throat, separating the gray of the head from the chin; 
upper throat white, changing on the lower throat and front of the chest 
into rufous, and the whole mottled with pale gray; remainder of the 
under parts white, with the breast down to the thighs broadly barred with 
dusky brown, and partially washed with rufous; under wing-coverts 
white, shaded with rufous; quills dusky brown with numerous white or 
buff partial bars on their inner webs. ‘Bill black, with the base of the 
lower mandible pale green; iris, eyelids, legs, and claws bright gamboge- 
yellow.’ (Davison.) Length, 394; culmen, 28; wing, 206; tail, 190; 
tarsus, 25. 
“Immature.—Differs from the adult in the gray of the upper parts 
being confined to the crown, the back of the neck being mottled with 
rufous, the feathers of the back and wings more or less edged or barred 
