NO. 9 BIRDS OF ISLA COIBA, PANAMA—WETMORE 23 
Family AccrpiTRIpAE: Hawks, Eagles 
HARPAGUS BIDENTATUS FASCIATUS Lawrence: Double-toothed Kite, 
Gavilan Dentado 
Harpagus fasciatus LAWRENCE, Proc. Acad. Nat. Sci. Philadelphia, December 
1868 (1869), p. 429. (Guatemala.) 
On January 13, when I was calling small birds, a female kite 
alighted overhead on a limb so large that the bird was completely 
hidden from view. Presently it moved to another tree and began to 
climb through the branches. It is a specimen in which the lower 
surface is strongly chestnut, with the barring broad and the gray 
much reduced. 
ACCIPITER BICOLOR BICOLOR (Vieillot): Bicolored Hawk, Gavilan de Dos 
Colores 
Sparvius bicolor Vie1ttot, Nouveau dictionnaire d'histoire naturelle, nouv. éd., 
vol. 10, June 21, 1817, p. 325. (Cayenne.) 
On January 17 when we were in tall forest one of these hawks 
came dashing through the branches to a perch a few feet away, at- 
tracted by the calls of a thrush. It proved to be an adult female, and 
one that probably was feeding young. On January 23, a prisoner 
brought me an immature male from San Juan. Hawks of this species 
are decidedly uncommon in Panama, being found only where there 
is heavy forest. 
The adult female had the following colors in life: Base of maxilla 
below nostril and base of mandible neutral gray; rest of bill black; 
cere dusky neutral gray; edge of the eyelids honey yellow; rest of 
the bare skin about the eye and on the loral area dull yellowish green ; 
iris orange ; tarsus and toes yellow; claws black. The double ovary, 
usual in hawks of this genus, was present, the right one about one- 
third the size of the one on the left. The appearance on the left 
side indicated that the bird had laid rather recently. This bird has 
the abdomen paler than the breast and the under wing coverts partly 
rufous, both indications that remain from the immature dress. 
The second specimen is cinnamon-buff below, with gray feathers 
of the adult dress beginning to appear on the throat, foreneck, and 
in a ring around the hindneck. 
BUTEO PLATYPTERUS PLATYPTERUS (Vieillot): Broad-winged Hawk, 
Gavilan Aliancho 
Sparvius platypterus ViEtLtot, Tableau encyclopédique et méthodique des trois 
régnes de la nature, vol. 3, 1823, p. 1273. (Philadelphia, Pa.) 
The broad-winged hawk, migrant from the north, is common on 
the mainland, but during my entire stay on Coiba I recorded only 
