Birds of The Palisades Interstate Park 
SO 
53. Yellow-billed Cuckoo. Coccyzus americanus americanus 
(Linn.) 
The Yellow-billed Cuckoo, according to my observation, does not 
occur so commonly throughout the Park region as the Black-billed 
species. On June 13 I noted that a Yellow-billed Cuckoo was 
working low in the shrubbery on the ridge south of the Guest 
House premises. When disturbed the bird perched rather low 
behind sprouts ahead, and uttered a guttural scolding, resembling 
the word “ cur-ul-la,” emphasizing the middle syllable. This 
cuckoo can be recognized by the bright cinnamon wing areas in 
flight, and the yellow lower mandible when near enough for the 
color to be seen clearly. 
54. Broad-winged Hawk. Buteo platypterus (Vieill.) 
The Broad-winged Hawk, common in the neighborhood of the 
Guest House, was seen frequently in soaring flight over the wooded 
hills. The sharp pewee-like cry of this hawk, quite different from 
the cries of the other Buteos, aids in its identification. It lacks 
the bright chestnut-red shoulder marking of Buteo lineatus lineatus, 
which occurs less commonly in the same region; and it also lacks 
the bright reddish brown tinge on the upper side of the tail, which 
characterizes Buteo borealis borealis. On August 1 I noticed a 
Broad-winged Hawk soaring low above Kanahwauke Lake, uttering 
its “ pee-ee ” calls, and it was followed by swallows to a consider- 
able height, the smaller birds flying around and above the hawk 
though not appearing to strike at it. The hawk retreated higher 
and farther, crying out occasionally with fretful energy until well 
beyond the range of the swallows. 
55. Red-shouldered Hawk. Buteo lineatus lineatus (Gmel.) 
The Red-shouldered Hawk is not common in the Park region, 
according to my observation. I saw it only once, on July 15, when 
a mature bird was soaring in low flight above the hill on the west 
side of Carr Pond, its reddish-brown shoulder color and reddish- 
brown under parts showing in the clear sunlight as the bird 
careened in its irregular spiral ascent. It uttered no cry; indeed, 
