56 - "/' 



A small colony of these graceful petrels were found breeding on Copper Island, in 

 Bering Sea, by Dr. Stejneger. The eggs were taken July 12th, a single one in each 

 nest, were deposited in deep holes in the steep basaltic rocks, three feet or more 

 deep, and it was only with great difficulty that a few could be secured. Some males 

 and some females were taken in the nests. The eggs were in different stages of in- 

 cubation, white without gloss, with minute dark specks evenly dusted over the blunt 

 end; in one the specks were a little larger, purplish-black, forming a circle around 

 the blunt end. Three eggs measure 34x26, 32.5x25, 34x26.5 mm.* 



106. LEACH'S PETBEL. <>ri,i<,,!r<,ma h-urorhoa (Vieill.) Geog. Dist. North 

 Atlantic and North Pacific Oceans. 



Leach's Fork-tailed Petrel at various seasons of the year wanders over a large 



portion of the watery expanse of the globe. It breeds in the months of March, April, 



May, June, July and August, according to locality, in the northern latitudes of Bu- 



rn and Western North America. On the Atlantic coast of North America 



from Maine northward it nests generally in June and July. Thousands breed on 



some of the islands on the northern New England coast, especially those in the 



ity of Grand Manan and the small islands of Casco Bay. The offensive reddish, 



oily fluid with this species almost invariably ejects when handled or irritated prob- 



ably serves as food for the young. The male and female assist in the duties of in- 



cubation and often both sexes may be found sitting side by side in their burrow. 



Eggs collected on the Atlantic coast are chalky-white, finely dotted on the larger 



end, often in a rircle, with purplish-red and lilac. Twenty specimens average in 



On approaching the breeding ground of the petrels, not one of th<>m 



is to be seen. Many of the birds are far out at sea, and as night comes on those in 



burrows come, forth and those out at sea return, and the ;>.ir seems alive with 



flitting about like bats and uttering their peculiar clattering notes. 



106. 1. GUADALUPE PETREL, nrrnnmlrnmii wn<rn(1n<-1iiln (Bryant.) Geog. 

 Dlst. Guadalupe Island, Lower California. 



Mr. P.ryant describes tbis species as being similar to O. Irncurli'ia. but larger and 



.Vhite of upper tail coverts more restricted, and the ends of coverts broadly 



i with black. Pileuni darker than back, lighter anteriorly. Hill broader and 



rat base than that of l<-nr,,rli<nt. He records this petrel as nesting in March 



Island, which is situated two hundred and twenty miles southward 



and '.f San Diego California. Here he found the birds In-ceding in bur- 



'inder boulders and fallen In 



in length, at the extremity of which were enlarged chambers where the single egg 

 waa laid upon a few pine needles. The egg. Mr. P.ryant <! shaped much 



like that of a p Mite ju color, one end being wreathed with a fine spattering 



of mi of reddish-brown and pale lavender. t The average size of fifty eggs 



'.. is 35.7 by 27 mm. or 1.10x1. on in< r 



107. BLACK PETBEL. n> tni<,ilnnn<i melanin (Bonap.) Geog. Dist. South 



id to Lower California. 



- of this aperies have been taken at Cape St. Lucas and other islands of 

 eggs as noted below. Mr. Chauncey W. Crandall has in his 



'14x1.04 Inches. 



t Additions to the Ornithology of Gundalupo Island. By Walter E. Bryant. Bulletin 

 f, California Academy of S< 



