386 A Description of the Birds 
broadly banded brown and reddish tawny, middle ones brown- 
ish black, with irregular tawny bands or blotches ; the tips of 
all the feathers reddish white; tarsi and toes yellow; claws 
black. 
Inhabits Namaqualand and the country about Oliphant’s 
River, as well as various parts on the eastern coast of the 
Colony. Of this species I have only met with two specimens, 
and as both of them had the tips of many of the feathers on 
the back, of a color distinctly differmg from the prevailing 
one, I am disposed to consider neither of them as birds ar- 
rived at complete maturity. I should not be surprised if far- 
ther observation may enable us to identify this with the last 
described species. 
Circus Acoui. Witte valk. Leewwerkvanger. 
Faleo Acoli. Daudin, Shaw. L’Acoli, Le Vaillant, tom. 1, 
pl. 31. 
C. supra ceruleo-griseus, subtus subalbidus pectore, abdo- 
mine et femoribus nigro lineatis. 
Male.—Bill horn-colored towards base, bluish black towards 
tip; cere red; eyes orange red ; color of plumage above pale 
bluish gray; beneath whitish, with the breast, belly, and 
thighs, finely rayed transversely with black; body slender ; 
legs long; tail nearly even, and of a dirty brownish white 
tint; shafts reddish brown; legs and, toes yellowish ; claws 
black. 
Female.—A third larger than the male, and the cere of a 
less deep red. 
This species, according to Le Vaillant, occurs in Zwartland, 
and about the Twenty-four Rivers. It feeds upon mice, rats, 
lizards, &c. has a quick flight, and commonly soars along close 
to the ground, over cultivated lands and sandy deserts. The 
male and female are for the most part observed together ; 
and the latter constructs her nest in small bushes, and lays 
four dirty white oval eggs. 
Obs.—Having never met with this bird myself, I include it 
solely upon the authority of the naturalist just quoted, whose 
imperfect description I have introduced; and, great as the 
authority is, I cannot refrain from stating a doubt as to the 
existence of such a species: being disposed to consider it as 
the Accipiter Musicus, immediately before moulting. 
Circus Ranivorus. Hekvorsvanger of the Colonists. 
Falco Ranivorus, Daudin, Shaw. Le Grenouillard, Le 
Vaillant, tom. 1, pl. 22. 
C. supra brunneus, rubro-albo variegatus, humeris nigro-brun- 
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