Petrels. 
104. Stormy Petrel; Mother Carey’s Chicken(Pro- 
cellaria pelagica). L.5.5. Ads. Sooty black, brown- 
er below; upper tail coverts white, tipped with black. 
Range.—North Atlantic; winters south to western Africa and New 
Brunswick. 
“106. Leach Petrel; Stormy Petrel (Oceanodroma 
leucorrboaj). L.8., W. 6.2. Ads. Tail forked; above 
sooty brownish black; below browner; lesser wing cov- 
erts grayish brown; longer upper tail coverts ot tipped 
with black. Notes. An elfin-like crow of eight notes. 
Range.—North Atlantic and North Pacific; breeds from Maine to 
Greenland and from Farallone to Aleutian Islands; winters south to 
Virginia and California. 
106.1. Guadalupe Petrel (Oceanodroma  macro- 
dactyla). L. 8.4; W. 6.4; T. 3.9, fork rin. deep. Ads. 
Similar to O. Jeucorrhoa, but with much longer and 
more deeply forked tail, larger feet, shorter bill, and 
very broad dusky tips to the upper tail coverts. 
(Ridw. in Cat. B. M.) 
Range.—Pacific Ocean; (Guadalupe Island, Lower Californla.) 
107. Black Petrel (Oceanodroma melania.) L. 9. 
Ads. Sooty black, paler below; wing-coverts grayish, 
tail forked. 
Range.—South Pacific, north to Santa Barbara Islands; breeds on 
Coronados Islands, southern California. 
108.1 Socorro Petrel (Oceanodroma socorroensis), 
W.5.5. Ads. Similar to No. 108, but wings longer; 
tail shorter and less deeply forked; sides of rump 
whitish; no white on under surface of wing. (Towns.) 
Range.—Pacific Ocean; (Socorro Island, southern California.) 
“109. Wilson Petrel; Stormy Petrel (Oceanites 
oceantcus). L. 7. Ads. Webs of feet with yellow 
patch; tail not forked; longer upper tail coverts not 
tipped with black. Notes. A weak weet, weet, and a 
hoarse chattering patret-tu-cuk-cuk-tu-tu. (Wilson.) 
Range. Atlantic Ocean; breedsin Southern seas, (Kerguelen Is- 
land in February), and migrates north to Newfoundland, spending 
summer off coast of eastern United States. 
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