DUCKS. 67 
regular visitor, being more numerous along our western shores, and its 
handsome red-breasted ally (B. ruficollis) (165) very rarely wanders as 
far west as Great Britain. The commonest species that visits us is 
undoubtedly the Brent-Goose (Branta bernicla) (164), which is specially 
numerous along the east coast and may sometimes be seen in almost 
countless multitudes. The two forms of this bird are exhibited; the one 
having the underparts pale whitish-grey, while in the other they are dark 
grey or brown. Another familiar member of tiis genus is the large 
Canada Goose (B. canadensis) (162), which has for more than two 
centuries been domesticated in this country. 
The Emperor-Goose (PAilacte) (166) and the Sandwich Island Goose 
(Nesochen) (167) are two somewhat remarkable forms, the latter being a 
very rare species which inhabits the craters and lava-flows on the 
hills of the Hawaiian Islands. 
To rather a different group belong the South American Upland-Goose 
and its allies (Chloéphaga) (168-1170), the Abyssinian Dwarf-Goose 
(Cyanochen) (111), and the Australian Maned Goose (Chenonetta) (1172). 
The Upland Goose is a familiar bird to many, for being a large, hand- 
some and hardy species, it is frequently kept on ornamental waters in 
this country. 
The last section of the Anatide includes the Spur-winged Geese 
(Plectropterus), represented by the N.E. African form P. riippelli (173), 
characterised by its high frontal knob, and the Muscovy Duck (Catrina 
moschata) (174) of Tropical South America, with its bare red face 
and fleshy wattles, frequently kept in a domestic state both in this and 
other countries. Another remarkable form is the Indian and N. African 
Black-backed Goose (Sarcidiornis melanonota) (115), the bill of the male 
being ornamented with a fleshy comb which is about 2 inches high in 
the breeding-season. Both these and the Muscovy Ducks (774) nest in 
hollow trees. 
The White-winged Wood-Duck (Asacornis scutulata) (116) and the 
Pink-headed Duck (Rhodonessa caryophyllacea) (111), the only members 
of their respective genera, are both peculiar to the Indo-Burmese 
countries. The colouring of the latter is specially remarkable, the 
delicate pink head and neck being quite unlike that of any other Duck. 
The Pigmy Geese or Cotton-Teal (Nettopus) (778-780) are all natives 
of the Old World, and several species representing these handsome little 
birds are exhibited. The lovely Summer-Duck (782) of N. America, and 
the still more splendid Mandarin-Duck (781) from N.E. Asia and Japan, 
constitute the genus 4x. With the full-plumaged male of the former 
will be found another example in complete “ eclipse-plumage ” like that 
of the female. 
The Black-and-White Goose (Anseranas semipalmatus) (188) is the 
F2 
[Case 41. ] 
[Case 42. ] 
[Case 42. | 
