Ml'. R. B. Sharpe’s Catalogue 0 /Accipitresi 147 
specimens from Bissao; and the former collection also con¬ 
tains an adult female obtained in January on the Bio Dande 
in Angola, which appears to be the only example hitherto 
obtained in the Portuguese possessions in Western Africa*. 
In Eastern Africa, south of the equator, this species occurs 
on the Zambesi, specimens from there being preserved iii 
both the above-named collections; and the British Museum 
also possesses an adult example from the river Shire. Its 
occurrence in Central and Eastern Africa, north of the equator, 
is thus recorded by Von Heuglin :—A young female was shot 
at Bongo, in Central Africa .... Prince Paul of Wiirtem- 
berg killed an old male in 1840 on the Blue Nile, rather 
below the 12th degree, between Bozeres and Fazogl j I re= 
ceived this species from the Quola of West Abyssinia, from 
the Fudj Mountains, from Bahr el Djebel, and from Bahf 
Ghazal;....! am unable to say whether it is resident; but 
I met with it throughout the year, except from June to 
August ” f 
Mr. Sharpe correctly describes the usual phases of plu¬ 
mage incident to this species; but the Norwich Museum pos¬ 
sesses a specimen obtained on the Zambesi by the late Dr. 
Dickinson, which is evidently in immature dress, with the ex¬ 
ception of a few recently acquired adult feathers in the wings 
and tail, but which differs from the ordinary immature plu¬ 
mage in having the whole of the head, neck, and lower* parts 
of a dark brown, corresponding with the darker portions of 
the mantle, and only varied by paler tips to the feathers of 
the side-neck and throat, and by decidedly white tips to 
those of the tibiae and under tail-coverts, also by the mingling 
of a considerable portion of white with the brown of the 
wing-linings J. It should likewise be noted that in this spe¬ 
cimen the dark feathers of the underparts have no white 
bases. 
The only figure of this species in fully adult plumage which 
adequately represents the grey tint peculiar to the old bird 
^ Conf. Dll Bocage’s ^ Ornithologie d’Angola,’ 39. 
t Vide Ornithologie Nordost-Afrika’s, vol. i. pp; 87, 88. 
X The wing-linings are entirely white in the fully adult bird/ 
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