Literature & literary studies:

Probable Causes of Polygamy Among Birds (Classic Reprint)



Customer rating

Click to share your rating 0 ratings (0.0/5.0 average) Thanks for your vote!

Share this product

Probable Causes of Polygamy Among Birds (Classic Reprint) by Samuel Nicholson Rhoads
20% off
$18.99 was $23.99
or 4 payments of $4.75 with Learn more
In stock with supplier

The item is brand new and in-stock in with one of our preferred suppliers. The item will ship from the Mighty Ape warehouse within the timeframe shown below.

Usually ships within 2-3 weeks


Delivering to:

Estimated arrival:

  • Around 28 Jan to 1 Feb using Express Delivery
    Mighty Ape can deliver this product within 1-2 business days (usually overnight) to urban centres across Australia, and some remote areas. Learn more
    Unlikely to arrive before Christmas
  • Around 29 Jan to 5 Feb using standard courier delivery
    Unlikely to arrive before Christmas


Excerpt from Probable Causes of Polygamy Among Birds It has been observed that among animals a prepotent male is likely to generate more females than males, while in the offspring of an impotent male the reverse holds true. This, is it will be seen, tends to balance the sexual proportion among polygamists, for the overproduction of females by a generation of prepotent males would finally exhaust their sexual power by the demands of excessive intercourse and, as a result of the impotency thus incurred, the number of young males would increase. Hence polygamous sexual intercourse, while tending to extinction of the species when carried too far, has within itself a remedy by the natural tendency to increase the percentage of males in the next generation. This compensatory law, whereby nature seeks, as it were, to cure the evil results of polygamous excesses by male overproduction, may explain the present state of affairs as cited by Darwin and quoted above. Evidently the reformatory process is going on at the present day among the Species enumerated, be cause the males are yet overtasked by too great preponderance of females. We find strong proof of this in the very examples given, for in the case of the domestic fowl, whose connubial rela tions are wisely regulated by the careful breeder, a larger per centage of female chicks were produced, while the eggs of unre stricted wild pheasants brought forth four times as many males as females. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Release date Australia
November 18th, 2016
, black & white illustrations
Country of Publication
United States
Forgotten Books
Product ID

Customer reviews

Nobody has reviewed this product yet. You could be the first!

Write a Review

Marketplace listings

There are no Marketplace listings available for this product currently.
Already own it? Create a free listing and pay just 9% commission when it sells!

Sell Yours Here

Help & options

  • If you think we've made a mistake or omitted details, please send us your feedback. Send Feedback
  • If you have a question or problem with this product, visit our Help section. Get Help
  • Seen a lower price for this product elsewhere? We'll do our best to beat it. Request a better price
Filed under...