ANATID&, RESIDENT AND MIGRATORY 319 



Of the foregoing, some are resident, and some 

 are migratory ; some few are too rare to necessitate 

 any further reference. In this latter category 

 may be included : 



1. The ruddy sheldrake. 



2. The American green-winged teal. 



3. The American blue-winged teal. 



4. The American widgeon. 



5. The red-crested pochard. 



6. The white-eyed pochard. 



7. The buffel-headed golden-eye. 



8. The harlequin duck. 



9. Steller's eider duck. 



10. The king eider. 



11. The common eider. 



12. The hooded merganser. 



Of the remaining nineteen varieties, the follow- 

 ing are residents : 



1. The sheldrake. 



2. The wild-duck. 



3. The shoveller. 



4. The teal. 



5. The red-breasted merganser. 



Those which visit us from the autumn to the 

 spring are : 



The gadwall (breeds in Norfolk). 

 The pintail (sometimes breeds in Ireland). 

 The widgeon (many breed in Scotland). 

 The pochard (breeds in a few places). 



