. Cyclopedia of farm animals. Domestic animals; Animal products. BIRDS IN THEIR RELATIONS WITH AGRICULTURE 169 States Department of Agriculture. For many years this corps of investigators has been patiently studying the problems involved, and has published a long series of scientific and practical reports in which will be found a discussion of nearly every phase of the relation of these animals to agriculture. The following are some of the more important of these. A complete list may be had on application to the Survey : Vernon Bailey, Revision of Ameri- can Voles, North American Fauna, No. IT


. Cyclopedia of farm animals. Domestic animals; Animal products. BIRDS IN THEIR RELATIONS WITH AGRICULTURE 169 States Department of Agriculture. For many years this corps of investigators has been patiently studying the problems involved, and has published a long series of scientific and practical reports in which will be found a discussion of nearly every phase of the relation of these animals to agriculture. The following are some of the more important of these. A complete list may be had on application to the Survey : Vernon Bailey, Revision of Ameri- can Voles, North American Fauna, No. IT; Same,. Fig. 150. Head of black-footed ferret (Putorius nigripes). (After Biological Survey.) The Pocket Gophers of the United States, Bulletin No. 5 ; Same, Destruction of Wolves and Coyotes, Circular No. 55 ; Same, Wolves in Relation to Stock, Forest Service Bulletin No. 72 ; David E. Lantz, Coy- otes in their Economic Relations, Bulletin No. 20, and Farmers' Bulletin No. 226 ; Same, Methods of Destroying Rats, Farmers' Bulletin No. 297 ; Same, Destroying Pocket Gophers. Circular No. 52 ; Same, An Economic Study of Field Mice, Bulletin No. 31; C. Hart Merriam, Revision of the Pocket Gophers, North American Fauna, No. 8 ; Same, Synopsis of the Weasels, North American Fauna, No. 11; Same, Prairie Dogs, Yearbook, 1901, and Circular No. 32; T. S. Palmer, The Jack Rabbits of the United States, Bulletin No. 80. Valuable articles have been pub- lished by some of the agricultural experiment stations, notably in Bulletin No. 129, of the Kan- sas Station, in which David E. Lantz discusses Kansas mammals in relation to agriculture, and in Bulletin No. 58 of the Nevada Station, in which Peter Frandsen discusses ground-squirrels and other rodent pests. BIRDS IN THEIR RELATIONS WITH AGRICULTURE By Edward Howe Forbush The relations of certain birds to agriculture are so complicated that they are not yet fully compre- hended even by the economic ornithologist, and they are often entirely mi


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Keywords: ., bookauthorbaileylh, bookcentury1900, bookdecade1920, bookyear1922