The Bird Rock Group. 21 
which resembles the syllables 4¢#-//-wake, several times repeated. 
Kittiwakes nest from Bird Rock and the British islands north- 
ward, and in winter range southward to Virginia and the 
Canaries. 
During their winter wanderings Kittiwakes are true sea-gulls, 
rarely visiting our inner harbors and bays, where the common 
winter gull is the Herring Gull, the adults of which, though 
much larger, are not unlike adult Kittiwakes in color; those born 
the preceding summer being grayish. (See gallery, case B, for 
this and other species of American gulls.) 
Gannet (.Su/a dassana). Gannets nest on certain small islets 
off the British coast, in the Faroes, and in Iceland, but in Amer- 
ica breed only on Bird Rock and Bonaventure, 150 miles to the 
. “ + + . va , . 
west. In the winter they range southward, keeping usually well 
