THE GREY DUCKS. 



THE group of Grey Ducks comprises 

 two species of Indian Ducks which are 

 usually united to the True Ducks; the 

 Grey Duck being associated with the Wild 

 Duck, and the Andaman Duck with the 

 Common Teal. 



The Grey Ducks differ from the True 

 Ducks in so many important respects that 

 I am obliged to regard them as a very 

 distinct group. They have given up 

 their migratory habits and have become 

 localised. As a consequence, they re- 

 quire to fly less, and the wing is therefore 

 more blunt than in the True Ducks, as 

 indicated by the greater length of the 

 outer secondaries, the tips of which, in 

 the closed wing, reach to the tips of the 

 longest primary coverts. The lengthening 

 of the outer secondaries in the Grey 

 Ducks causes the speculum to be very 

 large. The primaries, instead of present- 

 ing the peculiar pattern observable in the 

 primaries of the True Ducks, are blackish 



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