. The birds of South Africa. Birds. PALCONID^ BUTBO 331 Description. Adult male.—Above, black, most of the feathers with concealed white bases ; primaries ashy becoming black toward the tip,* the greater part of the inner webs below the notch pure white, secondaries ashy to white with narrow bands of dark brown broadly tipped with black; tail-feathers rich rufous with black subterminal spots more or less developed; below, the chin, throat, and sides of the breast, black, centre of the breast rich rufous ; abdomen, thighs, and under tail-coverts black mingled with white and rufous ; tail very p
. The birds of South Africa. Birds. PALCONID^ BUTBO 331 Description. Adult male.—Above, black, most of the feathers with concealed white bases ; primaries ashy becoming black toward the tip,* the greater part of the inner webs below the notch pure white, secondaries ashy to white with narrow bands of dark brown broadly tipped with black; tail-feathers rich rufous with black subterminal spots more or less developed; below, the chin, throat, and sides of the breast, black, centre of the breast rich rufous ; abdomen, thighs, and under tail-coverts black mingled with white and rufous ; tail very pale rufous below ; the coloration of the under surface varies a good deal, white often predominates over the rufous of the breast and also shows on the chin; these are probably not quite adult Pig. 112.—Buteojahal. x 3%. Iris grey-brown to yellow; bill dark brown, tip black; cere and gape yellow; tarsus yellow ; claws black. Length 21*5 ; wing 15'5 ; tail 7'5; culmen 1-5 ; tarsus 3'6. The female resembles the male but is larger, length 23'0; wing 16'5; tarsus 3-6. A nestling in the South African Museum is covered with white down, only the wing feathers which are dark brown are beginning to sprout. A young bird is brown above, with paler and in some cases more rufous edgings to the feathers ; wings as in the adult; the tail- feathers are like the back but tinged with rufous towards the base, and show traces of narrow transverse bars disappearing towards the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stark, Arthur Cowell, d. 1899; Sclater, William Lutley, 1863-1944; Sclater, William Lutley, 1863-1944. Fauna of South Africa. London, R. H. Porter
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherl, booksubjectbirds
