BREEDING RANGE 

 WINTER RANGE 



Figure 20. — The breeding range, winter range, and migration route of 

 Ross's goose. This is the only species of which all members appar- 

 ently breed in the Arctic regions, migrate south through the Mac- 

 kenzie Valley, and upon reaching the United States, turn to the south- 

 west rather than the southeast. The southern part of this route, 

 however, is followed by some mallards, pintails, baldpates, and 

 possibly by other ducks. 



A tributary of this flyway is followed by Ross's goose which is now 

 known to breed only in the Perry River district south of the Queen 

 Maud Gulf on the central Arctic coast of Canada (fig. 20). Its fall 

 migration appears to be southwest and south across the barren grounds 

 to Great Slave and Athabaska Lakes, where it joins thousands of other 

 waterfowl bound for their winter homes along the eastern coast of the 

 United States and the Gulf of Mexico. But when the Ross's geese 

 have traveled south approximately to the northern boundary of Mon- 

 tana, they separate from their companions, and turning to the south- 

 west cross the Rocky Mountains and settle for the winter in California. 



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