. Life histories of North American diving birds : order Pygopodes . November 25 to December 8. Egg dates.—^Bird Rock, Gulf of St. Lawrence: 16 records, June5 to July 25; 8 records, June 18 to 26. Greenland: 8 records June 10to July 18; 4 records July 3 to 12. Eastern Labrador: 4 records,June 10, July 1, 2, and 11. URIA LOMVIA ARRA (FaUas).FALXASS MirBBE. HABITS. The western form of Uria Zomvia known as Pallass murre {Urialomvia arra) is decidedly larger than the eastern or Atlantic form;the bill is larger and more slender and the white of the maxillarytomium is duller or more grayish. The crow
. Life histories of North American diving birds : order Pygopodes . November 25 to December 8. Egg dates.—^Bird Rock, Gulf of St. Lawrence: 16 records, June5 to July 25; 8 records, June 18 to 26. Greenland: 8 records June 10to July 18; 4 records July 3 to 12. Eastern Labrador: 4 records,June 10, July 1, 2, and 11. URIA LOMVIA ARRA (FaUas).FALXASS MirBBE. HABITS. The western form of Uria Zomvia known as Pallass murre {Urialomvia arra) is decidedly larger than the eastern or Atlantic form;the bill is larger and more slender and the white of the maxillarytomium is duller or more grayish. The crowbill, as it is calledby the sailors, is the most important, probably the most numerous,and certainly the most generally distributed of the birds of BeringSea. To the natives it is most valuable as an egg bird, for its eggsare large, palatable, abundant, and easily obtained; its flesh is alsodesirable as food. While cruising about the Aleutian and PribilofIslands, in the extensive fogs which prevail there almost constantly U. S. NATIONAL MUSEUM BULLETIN 107 Bogoslof Island, Alaska. A.
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