40. Rissa tridactyla 
KITTIWAKE. 16 inches 
Adult. Insummer. Above, head white; back gray; long quill 
feathers tipped with black ; tail white. Below, white ; 62/7 yellow ; 
feet black. In winter. Similar, but back is darker gray and there 
is a blackish spot back of the eyes. Immature. on 
Similar to winter adult but bill is black; feet 
yellowish. An ocean bird, not common in the 
harbors or on the shore unless driven in by a 
storm. Is much smaller than the Herring Gull. 
Called Winter Gull by the fishermen. 
Note. “ Avtti-wake, Ait-ti-wake.” 
Breeds. On rocky cliffs north of New Eng- 
Jand. A winter visitor, October to March. 

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