1. Fewer than 50 bird species are polyandrous.

2. They are largest in polyandrous birds, where several males fertilize one female, and it is not hard to see why.

3. But polyandrous families seldom had more than six or seven children.

4. Polyandrous - A mating system in which females mate multiple males.

5. The theory focuses on polyandrous species—i.e., those in which a single female takes multiple partners and the sperm from several potential fathers might end up competing to fertilize the same egg.

6. "Over time, Tibetan polyandry has been outlawed,[http://sentencedict.com/polyandrous.html] so it is difficult to measure the incidence of polyandry in what may have been the world's most "polyandrous" society.

7. A daughter produced in the polyandrous marriage remained behind in their village, and Bhimi Ram went off to start a new life.

8. The sexes form different kinds of association for breeding in different species; some are monogamous, others polygynous, others polyandrous.

9. And within these, the feeling of close kinship would simplify the constitution of the polyandrous arrangement.

10. Not one of Ms. Devi’s five children lives in a polyandrous family.