FULMARS, SHEARWATERS, PETRELS 177 



106. Oceanodroma leucorhoa (VieilL). LEACH'S PETREL. Ads. 

 Upperparts, wings and tail sooty brown; underparts slightly browner; 

 wing-coverts grayish brown; longer upper tail-coverts white, shorter ones 

 mixed with sooty brownish; tail forked, outer feathers more than '50 longer 

 than middle pair; bill and feet wholly black. L., 8'00; W., 6'20; T., 3'50; 

 B., '62. 



Range. N. Pacific and N. Atlantic oceans. Breeds from the Aleutian 

 and Copper Islands, Bering Sea, s. to Sitka, and from s. Greenland s. to 

 Maine and the Hebrides; casual in migration s. to Va. 



Washington, A. V., several records, most frequent in Aug. Long Island, 

 rare T. V., May; July- Aug. Cambridge, rare T. V. in fall. 



Nest, of a few bits of grasses and feathers in a burrow in the ground, or 

 beneath a rock. Egg, 1, creamy white, sometimes with a wreath of minute 

 or obscure markings at the larger end, 1'34 x TOO. Date, Bird Rock, Que., 

 May 29. 



This is the only Petrel nesting on our Atlantic Coast, where from 

 about May 1 it is locally abundant on islets or isolated headlands from 

 Maine northward. It digs its own nesting-holes or uses, sometimes in 

 common, those made by Puffins. During the day it apparently never 

 leaves its nest, on which, prior to laying, both birds may be found, 

 but later, only one, either the male or female, incubates or remains 

 with the young. The absent one of the pair is presumably then at sea, 

 from which it returns after nightfall. 



On Bkd Rock in the Magdalens, where not a Petrel was seen during 

 the day, I was given the most surprising evidence of their activity 

 during the night. From the ground at my feet and from every side there 

 issued the uncanny little song of birds doubtless sitting at the mouths 

 of their burrows. It was a distinctly enunciated call of eight notes with 

 a certain crowing quality; such a call as might be uttered by elves or 

 brownies. Occasionally I saw a blur of wings as a bird passed between 

 me and the lighthouse. 



1909. CHAPMAN, F. M., Bird Studies with a Camera, 180. 



The HAWAIIAN PETREL (106.2 Oceanodroma castro) of southern oceans 

 has been taken in the District of Columbia (two specimens Aug. 29, 1893) 

 and in Indiana. 



109. Oceanites oceanicus (Kuhl). WILSON'S PETREL. Ads. Upper- 

 parts, wings and tail sooty black; underparts somewhat lighter; under tail- 

 coverts mixed with whitish, longer upper tail-coverts white, shorter ones 

 marked with sooty black; wing-coverts grayish, margined with whitish; 

 bill and feet black, toe-webs mostly yellow. L., 7'00; W., 5'90; T., 2'80: 

 B., '50. 



Range. S. Polar regions n. to Lab. and British Isles. Breeds on 

 Antarctic islands in Feb.; occurs off American coast from May-Sept.; 

 accidental on Muskoka Lake, Ont. 



Washington, A. V., one record. Long Island, common S. R., May-Sept. 



Nest, in burrows or the crevices of rocks. Egg, I, white. Date, February. 



It is generally known that some birds which nest in the northern 

 parts of our continent in the winter migrate as far south as Patago- 

 nia; but comparatively few are aware that during the summer we 

 receive several visitors from the southern parts of the Southern Hemis- 

 sphere. They are all included in the fam ;1 y Procellariidoe, and Wil- 



