Several years ago the writer was much struck by the great sexual differences met with among the Gallinae, and had noted the fact that there was a relation between sexual disparity in size and polygamy.
Proceedings of the Iowa Academy of Sciences
©1890 Iowa Academy of Science, Inc.
Nutting, C. C.
"Some of the Causes and Results of Polygamy among the Pinnipedia,"
Proceedings of the Iowa Academy of Science, 1(Pt. 2), 96-102.
Available at: https://scholarworks.uni.edu/pias/vol1/iss2/41