172 THE NATUEALIST IN NORWAY. 



hooper makes its appearance in Lapland towards the 

 end of March, when it is frequently captured in steel 

 traps, which are placed near the openings in the ice, 

 and capture the swans when they come to drink. It 

 is called here the sang-svane, or singing swan. 



Bewick's swan (C. Bewickii) is occasionally observed 

 in this country. I have seen a specimen that was 

 shot on Lake Mjosen. It has eighteen feathers in the 

 tail, while the hooper has twenty. Its home is in 

 Siberia ; it is also said to breed in Iceland. The nest 

 is made in beds of rushes, and contains seven brownish- 

 yellow eggs. 



The Polish swan (G. immutabilis). Northern natu- 

 ralists have asserted that this species is not to be 

 found in Scandinavia. I have observed it once in 

 Norway. 



