[100]Farmers’ Bulletin 630, Biological Survey.
[101]“Useful Birds and Their Protection,” E. H. Forbush, page 342.
[102]From “The Home Life of Wild Birds,” by Francis H. Herrick; used with the permission of the author and his publisher, the G. P. Putnam’s Sons.
[103]“Useful Birds and Their Protection,” by E. H. Forbush, p. 241.
[104]“Life Histories of North American Birds,” Maj. Chas. Bendire.
[105]Farmers’ Bulletin 506, Biological Survey, U. S. Dept. of Agriculture.
[106]From “Notes on New England Birds,” by H. D. Thoreau.
[107]From “Under The Maples,” by John Burroughs.
[108]Farmers’ Bulletin 630, Biological Survey, U. S. Dept. of Agriculture.
[109]Farmers’ Bulletin 513, Biological Survey, U. S. Dept. of Agriculture.