Guide to the study of animal ecology

by Charles C. Adams

1901. Birds as Protectors of Woodlands. Forty-eighth Ann. Rep. Sec. Mass. State Board Agr. for 1900, pp. 300-321.

1904. The Destruction of Birds by the Elements in 1903-1904. Fifty-first Ann. Rep. Sec. Mass. State Board Agr. for 1903, pp. 457-503.

1905. Special Report on the Decrease of Certain Birds, and its Causes, with Suggestions for Bird Protection. Fifty-Second Ann. Rep. Sec. Mass. State Board Agr. for 1904, pp. 429-543.

Palmer, T. S.

1898. The Danger of Introducing Noxious Animals and Birds. Yearbook U. S. Dept. Agr. for 1898, pp. 87-110.

Ryder, J. A.

1892. A Geometrical Representation of the Relative Intensity of the Conflict between Organisms. Amer. Nat., Vol. XXVI, pp. 923-929.

McAtee, W. L.

1912. The Experimental Method of Testing the Efficiency of Warning and Cryptic Coloration in Protecting Animals from their Enemies. Proc. Acad. Nat. Sci. Phila., 1912, pp. 281-364.

Judd, S. D.