Male/female ratio bison sex


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Halloran concluded that calving rates in the Wichita Mountains were influenced by a tendency of individual females to produce calves in alternate years, a pattern that he attributed to superior condition of nonlactating females. After age 13, calving rates declined. McCann TS Population structure and social organization of southern elephant seals, Mirounga leonina. Unlimited access to purchased articles. Halloran's data were collected from to when the bison population averaged 3. The horns and teeth as indicators of age in bison J. Unquestionably the best known researcher on the prehistory of the high plains, he has been responsible for significant excavations of the Glenrock, Casper, Agate Basin, Carter-McGee and Mill Iron sites, and many others.
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Male to female sex ratio, ranked by state


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Human sex ratio - Wikipedia


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List of countries by sex ratio

As a contributing measure to gender imbalance in developing countries, Kristof and WuDunn's [57] best estimate is that a girl in India, from 1 to 5 years of age, dies from discrimination every four minutes , deaths per year ; that 39, girls in China die annually, within the first year of life, because parents did not give girls the same medical care and attention that boys received. Behavioral Ecology and Sociobiology. Countries with the same number of males and females accounting that the ratio has 3 significant figures , i. Sao Tome and Principe.
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