[10]From W. L. McAtee; Farmers’ Bulletin 755, Biological Survey, U. S. Department of Agriculture.
[11]Farmers’ Bulletin 755, Biological Survey, U. S. Department of Agriculture.
[12]William Dutcher, Former President of the National Association of Audubon Societies; Educational Leaflet No. 18.
[13]From “Notes on New England Birds,” H. D. Thoreau, page 421.
[14]From Eaton’s “Birds of New York,” page 255.
[15]Educational Leaflet No. 35, National Association of Audubon Societies.
[16]Used with permission of the Houghton Mifflin Co., the authorized publishers.
[17]Farmers’ Bulletin 506, Biological Survey, U. S. Department of Agriculture.
[18]“Useful Birds and Their Protection, ” by E. H. Forbush.
[19]From “Notes on New England Birds,” H. D. Thoreau, page 278.