. Report of an Expedition to Laysan Island in 1911: Under the Joint Auspices of the United States Department of Agriculture and University of Iowa . ry would seem almost found a number of young birds dead, but the mortality from nat-ural causes is not large, considering the number of tins species. Some-thing must have disturbed the birds earlier in the nesting season;possibly their eggs may have been taken. An accompanying map (p. 14), on winch I have indicated the lar-ger rookeries, will show about the area occupied by tins species. Atthe present time there are approximately 180,0
. Report of an Expedition to Laysan Island in 1911: Under the Joint Auspices of the United States Department of Agriculture and University of Iowa . ry would seem almost found a number of young birds dead, but the mortality from nat-ural causes is not large, considering the number of tins species. Some-thing must have disturbed the birds earlier in the nesting season;possibly their eggs may have been taken. An accompanying map (p. 14), on winch I have indicated the lar-ger rookeries, will show about the area occupied by tins species. Atthe present time there are approximately 180,000 Laysan albatrosses. For the benefit of those who have estimated the number of alba-trosses as high as 10,000,000, I would like to call attention to themap made by the officers of the Albatross in 1902. According tothis map Laysan has an area of about 5,420,S00 square yards. Takingout the area of the lagoon, which is 471,500 square yards, we have4,949,300 square yards. Place 10,000,000 birds the size of an alba-tross upon 4,949,300 square yards of ground; how much room would Bui. 42, Biological Survey, U. S. Dept. of Agriculture. Plate m Bo!. 42, Biological Survey, U. S. Dept. of Agriculture. Plate IV.
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