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STRUCTURAL CHARACTERS OF GEESE AND DUCKS USED IN 
THE KEY TO THE SPECIES. 
Fig. 1. 
Fig. 3. 
Fig. 2. 
Figs. 1 and 2. Hind toe narrowly lobed. — 1, Grey Lag-Goose ; 2, Mallard. 
Figs. 3 and 4. Hind toe widely lobed. — 3, Common Scoter; 4, Goosander. 
Fig. 6. 
Fig. 6. Bill of Mallard : the depth at the base less than half the total length. 
