. Useful birds and their protection. Containing brief descriptions of the more common and useful species of Massachusetts, with accounts of their food habits, and a chapter on the means of attracting and protecting birds . isit toWalrus Island in the Behring Sea six men loaded a badarrah,carrying four tons, to the Avaters edge with Murres Laysan, one of the Hawaiian Islands, there is a gi-eatbreeding place of an Albatross (Diomedea immutabilis).Such immense quantities of their eggs have been gatheredthat cars have been loaded with them.^ All this egg collect-ing, however, should be sto
. Useful birds and their protection. Containing brief descriptions of the more common and useful species of Massachusetts, with accounts of their food habits, and a chapter on the means of attracting and protecting birds . isit toWalrus Island in the Behring Sea six men loaded a badarrah,carrying four tons, to the Avaters edge with Murres Laysan, one of the Hawaiian Islands, there is a gi-eatbreeding place of an Albatross (Diomedea immutabilis).Such immense quantities of their eggs have been gatheredthat cars have been loaded with them.^ All this egg collect-ing, however, should be stopped, for it tends to exterminatethe birds, and all the eggs needed for human consumptioncan be produced by poultry. Sea birds which breed on isolated islands or barren shoresfeed mainly on animal food, Avhich they got from the consists of the excreta and ejccta of sea birds, mixedwith the remains of birds, fish, and other animals. It is foundon the gathering places of these birds. In the rainless lati- > A Review of Economic Omithology in the United States, by Dr. T. Yearbook, United States Department of Ajjriculture, 1890, jip. 271, this paper also for an account of the guano ,^ oo K U be . o 5 =fj hJ -a Pu VALUE OF BIRDS TO MAN. 83 tudes of the Pacific, near the equator, guano once accumulatedin tremendous deposits. It dried quickly, and where therewere no rains to wash it away it was preserved with most of itsfertilizing constituents intact. The guano found on islandsoutside the dry latitudes is of less value, as its nitrogen isquickly washed out or dissipated. The importance of guanoas a fertilizer was recognized in Peru b} the Indians morethan three centuries ago. Under the Incas the birds on theChincha Islands were carefully protected, and the depositsof guano jealousl}^ guarded. It is said that the penalty ofdeath was inflicted on any one who killed birds near theserocks in the breeding season. Humboldt, returning from his travels
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Keywords: ., bookcentury1900, bookdecade1900, bookidusefulbi, booksubjectbirds
