Order PR0CELLARIIF0RME8 
No. 102. 
Family PROCELLARIIDM. 
PTERODROMA COOKII COOKII. 
BLUE-FOOTED PETREL. 
(Plate 87.)* 
Peocellaria COOKII Gray, in Dieffenbach’s Trav. New Zeal., Vol. II., p. 199, 1843 ; New 
Zealand. 
Procellaria cooJcii Gray, in Dieffenbacb’s Trav. New. Zeal, Vol. II., p. 199, 1843 ; id., Voy. 
“ Erebus ” and “ Terror,” Birds, p. 17, pi. 35, 1845 ; Cassin, U.S. Expl. Exp., p. 414, 
1858 ; BuUer, Birds New Zeal., p. 307, 1873 ; Sandager, Trans. New Zeal. Inst., 
1889, Vol. XXII., p. 291, 1890. 
Rhantistes coohii Reichenbacb, Nat, Syst. Vog., p. iv., 1852. 
RJiantistes coohi Bonaparte, Comptes Rendus Sci., Paris, Vol, XLII., p. 768, 1856. 
Cookilaria leucoptera id., ib., Vol. XLIII., p. 995, 1856. 
Cookilaria velox id., Consp, Gen. Av,, Vol. II., p. 190, 1857. 
Procellaria velox Pelzeln, Reise Novara. Vog,, p. 146, 1865. 
uEstrelata cooki Gould, Handb. Birds Austr., Vol. II., p. 456, 1865. 
Fulmarus cookii Gray, Handl. Gen, Sp. Birds Brit. Mus., Vol. III., p. 106, 1871. 
Pterodroma {JEstrelata) cookii Ramsay, Proc. Linn. Soc. N.S.W., Vol. IT., p. 202, 1877 ; 
id.. Tab. List Austr. Birds, p. 24, 1888. 
Procellaria cooki Reischek, Trans. New Zeal. Inst. 1885, Vol, XVIII., p. 92, 1886. 
(Estrelata cooki Buller, Birds New Zeal., 2nd ed., Vol. II., p. 217, 1888 ; Salvin, Cat. Birds 
Brit. Mus,, Vol. XXV,, p. 417, 1896 ; Campbell, Nests and Eggs Austr. Birds, p. 908, 
1901 ; Buller, Suppl. Birds New Zeal., Vol. I., p. 118, 1905 ; Hall, Key Birds Austr., 
p. 94, 1906 ; Mathews, Handl. Birds Austral., p. 17, 1908 ; Godman, Monogr. Petrels, 
p. 247, 1908. 
Distribution, Seas of East Australia and New Zealand. 
Adult male. General colour above dark ash-grey, including the crown of the head, hind-neck, 
sides of neck, short scapulars, back, upper tail-coverts, and middle tail-feathers ; 
the feathers of the back have dark shaft-hnes ; lesser, median, and greater wing- 
coverts black, hke the bastard- wing and primary-coverts ; primary-quills black on the 
outer webs and at the tips, the greater portion of the inner webs white ; the secondaries 
similar in colour but the dark portion of the feathers inchning to hoary -grey ; innermost 
secondaries, long scapular-feathers, and short upper tail-coverts greyish-brown ; outer 
* The Plate is lettered (Estrelata cooki. 
166 
