66 BIRD GALLERY. 



breeds in many parts of Great Britain, and has greatly increased since 

 the Act for the Preservation of Wild Fowls was passed in 1876. 



A rare and all but extinct form is the Flightless Duck [Nesonetta 

 aucUandica) (740), from the Auckland Islands, to the South of New 

 Zealand. 



The Pintail {Dafila acuta) (742) and the Gad wall (Chaulelasmus 

 streperus) (743) both breed in Great Britain, but are very local ; males 

 of both these species in "eclipse-plumage" resembling that of the female 

 are exhibited. 



Next come the Wigeons (Mareca), of which the typical species (M. 

 penelope) (745) is one of the commonest British Ducks, while tlie 

 American Wigeon (M. americana) (746) occasionally visits our coasts as 

 a stragjiler from North America. 



[Case 40.] The Sheld-Ducks (Tadorna and Casarca) are represented by various 

 handsome species, but none more strikingly so than the common species 

 T. cornuta (750). which is an abundant resident on our coasts. Tlie 

 female scarcely differs from the male in plumage, the markings being 

 only rather paler and less defined. This species has a curious habit of 

 breeding in burrows, which it either excavates for itself or appropriates 

 from other burrowing animals. The only other member of the genus 

 is the remarkable looking Australian form (7^. radjah) (751). Of the 

 genus Casarca the most familar is the Ruddy Sheld-Duck (C. rutila) 

 (748), which occasionally visits our coasts in considerable numbers and 

 is frequently kept on ornamental pieces of water. The inter-tropical 

 genus Dendrocycna includes the Tree-Ducks, mostly birds of chestnut 

 or brown plumage. They are remarkable for their long hind toe, and 

 habitually perch on trees, placing their nest, which contains from six 

 to twelve eggs, in a hollow tree, on a stump, or in long grass. The 

 geographical distribution of some of the species of Tree-Diick is very 

 remarkable, D. viduata (754) being found in S. America and the west 

 Indies as well as Africa and Madagascar, while D. fulva (753) ranges 

 from the United States and S. America across Africa and Madagascar 

 to India and Burma. The last species in this Case is the Egyptian 

 Goose {Chenalopex cegyptiaca) (755). 



[Case 41. J Commencing at the foot of the next Case we come to the "Grey" 

 Geese belonging to the genus Anser. Of these the Grey Lag (A.ferus) 

 (780) is the only species that breeds in Great Britain, a few pairs 

 remaining to nest in the north of Scotland and in the Hebrides. The 

 Pink-footed (757), Bean (758), and White-fronted Geese (759) are all 

 regular visitors to our coasts during the colder months, while the Lesser 

 White-fronted {Anser erythropus) (759 a), and the Snow-Goose (Chen 

 hyperhoreus) (761), a North American species, sometimes occur in very 

 severe weather. The Bernacle-Goose {Branta leucopsis) (763) is another 



