NO. 9 BIRDS OF ISLA COIBA, PANAMA—WETMORE 25 
fields and the rastrojo where these birds are usually observed in 
more settled areas. 
Though they shun deeply shaded forest areas, they usually rest 
on perches that are protected from the sun but that are sufficiently 
open to afford a view. Often they call querulously, when they are 
easily located. Usually, also, it is easy to approach them as they 
have little fear. On January 21 I recorded a nest, with birds about 
it, 40 feet from the ground in a tree of moderate size, rising above 
a thicket of second growth, but was not able to examine it closely. 
The six specimens prepared agree in general with those from the 
Pacific slope of Panama. The breast and foreneck average very 
faintly darker gray than most, but are equaled in this by occasional 
mainland specimens. The common name is given in imitation of 
the call. 
MORPHNUS GUIANENSIS (Daudin): Crested Eagle, Aguila Mofiuda 
Falco guianensis DAuDIN, Traité élémentaire et complet d’ornithologie, vol. 2, 
1800, p. 78. (Cayenne.) 
An occasional view of one of these great eagles soaring high in air 
over the forest is one of my stirring memories of Isla Coiba. The 
long tail and broad but blunt-pointed wings present a curious outline 
when seen in the air so that for a time, viewing them from a con- 
siderable distance, I was not wholly certain of their identity. One 
day the sharp eyes of Vicente saw one resting quietly on a high 
upper branch in an enormous forest tree, where its background at 
first view dwarfed it in such proportion that, until my eye had noted 
the long central feathers of the erected crest, the bird appeared to 
be some smaller kind of hawk. On several occasions two, obviously 
a pair, were observed soaring together. 
There have been relatively few observations of this species in 
Panama. 
BUTEOGALLUS ANTHRACINUS SUBTILIS (Thayer and Bangs): Common 
Black Hawk, Gavilan de Ciénaga 
Urubitinga subtilis THAYER and Bancs, Bull. Mus. Comp. Zool., vol. 46, June 
1905, p. 94. (Gorgona Island, Colombia.) 
A few of these hawks lived in and near the tidal swamps at the 
mouths of the San Juan and Catival rivers, and I saw others occa- 
sionally on the uplands back of the beach at Punta Damas. They do 
not enter the heavy inland forests, but prefer areas of more open 
growth along the borders. 
