The Geographical Range of the Brent Goose 189 



system of nest structure is not well known ; the eggs are 

 greyish white. 



In North America it is migratory but for a long time 

 the extent of the migrations of this species remained 

 unknown. 



It has not been observed in Mexican or Asiatic collec- 

 tions, neither has its occurrence been notified either in 

 Texas or South Carolina, though it may range to the 

 northern extreme of the Asiatic continent. 



This North American bird is exclusively maritime, 

 but easily tamed, feeding upon grain ; it has been known 

 to produce young in captivity. 



Unlike many of the birds known to the wild fowler 

 the plumage of the sexes does not vary much. 



