. A natural history of the ducks . ; bill 41 ; tarsus 80. Adult Female: Similar, but slightly smaller. Wing 305 mm.; bill 36 to 37; tarsus 70. Immature: Said by Mr. F. E. Blaauw to be a weak, washed o

. A natural history of the ducks . ; bill 41 ; tarsus 80. Adult Female: Similar, but slightly smaller. Wing 305 mm.; bill 36 to 37; tarsus 70. Immature: Said by Mr. F. E. Blaauw to be a weak, washed out copy of the dress of the adults(Hubbard, 1907). Young in Down (specimens in Leyden Museum): This is very easily distinguished from the young ofthe Egyptian Goose by a large square dark-brown patch behind and below the eye. It has a generalresemblance to the yoimg of the Cape Barren Goose (Cereopsis) and also to the Common Sheldrake.The occiput is dark brown to black and this color extends down

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. A natural history of the ducks . ; bill 41 ; tarsus 80. Adult Female: Similar, but slightly smaller. Wing 305 mm.; bill 36 to 37; tarsus 70. Immature: Said by Mr. F. E. Blaauw to be a weak, washed out copy of the dress of the adults(Hubbard, 1907). Young in Down (specimens in Leyden Museum): This is very easily distinguished from the young ofthe Egyptian Goose by a large square dark-brown patch behind and below the eye. It has a generalresemblance to the yoimg of the Cape Barren Goose (Cereopsis) and also to the Common Sheldrake.The occiput is dark brown to black and this color extends down the back of the neck as a narrow band.There is a broad, white supra-ocular band extending down the sides of the neck over the square brownface-patch, combining with the white of the neck and breast. There is also a narrow and poorly de-fined trans-ocular streak. The remainder of its upper side is almost as in the Sheldrake. There arebroad white lateral-line patches running from under the wings to the tail and there are large white. Map 21. Distribution of Orinoco Goose (Alopochen jubatus)Sporadic records are indicated by a cross (X) ORINOCO GOOSE 201 patches on the wings and scapulars. The color of the upper side is in sharp contrast to the pure whiteof the lower side and forms a striking color pattern. According to F. E. Blaauw (Bull Soc. dAcclimat.Paris, vol. 37, p. 60, 1890) the bill and feet are black. DISTRIBUTION Like its congener, the Egyptian Goose, this species is non-migratory. It is a strictly tropical bird, andmakes its home in the basin of the Orinoco and of the Amazons, with their tributaries. On the Orinocoit is the commonest species of duck (Cherrie, 1916; Taylor, Ibis, ser. 1, vol. 6, p. 96, 1864; Sclater andSalvin, 1876; Andre, 1904; Ernst, 1877). South of the Orinoco it was also met with in great numbers(Burger, Reisen eines Naturforschers, p. 329, 1900). In British Guiana R. Schomburgk found it onthe Lower Takutu, while Burmeister (1856) and the Penards (190