eemeresce Er | STORMY PETREL 
104. Thalassidroma pelagica. 5.5 in. 
Smallest of our petrels, and darker than either the 
Leach or Wilson; tail square; upper tail coverts white, 
tipped with black. 
This species is rare on the coasts of this country, but 
is common on the shores of the old world. It is the 
original ‘“* Mother Cary’s Chicken.” They nest abun- 
dantly on the shores of Europe and the British Isles. 
Their single white eggs, deposited at the end of bur- 
rows, are dull white with a faint wreath of brown dots. 
WILSON PETREL 
109. Oceanites oceanicus. 7 in. 
Tail square at end; coverts white, not tipped with 
black; legs long, with yellow webs. This species is very 
abundant on our Atlantic coast from July to Sept., 
spending the summer here after having nested in the 
KXerguelen Is. in February. Their upper parts are much 
more darker than those of Leach Petrel. 
62 Their note is a weak twittering “ keet-keet.” 
