Order P0DIGIPEDIF0RME8 Family PODIGIPEDIDM. 
No. 70. 
PODICEPS POLIOCEPHALUS. 
HOARY-HEADED GREBE. 
(Plate 63.) 
PoDicEPS POLIOCEPHALUS Jardine and Selby, 111. Orn., I., PI. and p. 13 (1827), Australia 
(New South Wales). 
Podiceps poliocephalus Jardine and Selby, 111. Orn. I., p. 13 (1827) ; Gould, B. Austr., VII., 
p. 82 (1848). 
Podiceps nestor Gould, P.Z.S., p. 145 (1836) ; id., Syn. B. Austr., PI. 19 (1837) ; id., Handb. 
B. Austr., II., p. 512 (1865) ; Ramsay, P.L.S., N.S.W., II., p. 200 (1877) ; id., 
Tab. List Austr. B., p. 22 (1888) ; North, Austr. Mus. Cat., No. 12, p. 347 (1889) ; 
id., B. County Cumb., p. 116 (1898); Keartland, Trans. Roy. Soc. S. Austr., XXII., 
p. 191 (1898). 
Podicipes poliocephalus Ogilvie-Grant, Cat. B. Brit. Mus., XXVI., p. 522 (1898) ; HaU, Key 
B. Austr., p. 104 (1898) ; Campbell, Nests and Eggs Austr. B., p. 1003 (1901) ; 
D’Ombrain, Emu, IV., p. 161 (1905) ; HaU, Key B. Austr., p. 104 (1906); Mathews, 
Handl. B. Austral., p. 14 (1908) ; Littler, Handb. B. Tasmania, p. 204 (1910). 
Distribution. Australia generaUy ; Tasmania. 
Adult male in breeding plumage. General colour of the upper-surface dark slate-grey, the 
feathers of the mantle, back, scapulars, and wing-coverts fringed with white ; bastard- 
wing, primary-coverts, and quiUs dark brown, the latter blackish at the tips and 
white on the inner webs, the white increasing in extent on the inner primaries, where 
they become white shaded with brown at the tips, the dark pattern increasing on the 
inner secondaries, where it spreads over the greater portion of the feathers, the white 
pattern being reduced to the base only ; sides of the lower-back and rump white 
streaked with brown ; head and neck aU round black, dusky on the forehead and 
lores, the feathers on the top of the head and sides of the face continued ihto white, 
hair-like tips, which impart a streaked appearance ; lower hind-neck dusky brown, 
becoming buff on the fore-neck ; breast also buff, darker on the sides, which is 
continued along the sides of the body on to the lower flanks, where they are greyish- 
brown ; under-surface pearly-white ; under wing-coverts and axillaries white, the 
latter with dark brown on the outer webs ; biU black, tip flesh-colour ; iris straw- 
yeUow; tarsi and feet olive. Total length, 271 mm.; culmen, 25; wing. 111; 
tarsus, 35. 
Adult female in breeding plumage. Similar to the adult male, but differs in being paler, the 
throat dark brown, and the fore-neck pale fawn. It is also somewhat smaller. 
Total length, 230 mm. ; culmen, 25 ; wing. 111 ; tarsus, 32. 
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