BIRDS. MAMMALS. 237 







The remains of birds are highly interesting and instructive. 

 The domestic fowl (Gallus domesticus) is entirely absent. The 

 two domestic swallows of Denmark (Hirundo rustica and H. 

 ur'bica), the sparrow and the stork, are also missing. On the 

 other hand, fine specimens of the capercailzie (Tetrao urogal- 

 lus), which feeds principally on the buds of the pine, show 

 that, as we know already from the remains found in the 

 peat, the country was at one time covered with pine forests. 

 Aquatic birds, however, are the most frequent, especially 

 several species of ducks and geese. The wild swan (Cygnus 

 musicus), which only visits Denmark in winter, is also fre- 

 quently found; but perhaps the most interesting of the birds 

 whose remains have been identified, is the Great Auk (Alca 

 impennis, L), a species which is now almost, if not altogether, 

 extinct. 



Of Mammalia, by far the most common are 



The stag (Cervus elephas, L.) 



The roedeer (Cervus capreolus, L.), and 



The wild boar (Sus scrofa, L.). 



Indeed, Professor Steenstrup estimates that these three species 

 form ninety-seven per cent of the whole ; the others are 



The urus (Bos urus, L.) 



The dog (Canis familiaris, L.) 



The fox (Canis vulpes, L.) 



The wolf (Canis lupus, L.) 



The marten (Maries sp.} 



The otter (Lutra vulyaris, Exl.) 



The porpoise (Delpliinus plioccena, L.) 



The seal (Phoca sp.) 



The water-rat (Hypudceus ampliibius, L. and 



Hypudceus agrestis, L.) 

 The beaver (Castor fiber, L.) 

 The lynx (Felis lynx, L.) 



