I read a recent book of statistics prepared by the Economist and found something rather startling. The six countries with the largest ratios of men to women are all in the Gulf States: UAE, Qatar, Kuwait, Oman, Bahrain, and Saudi Arabia.
The ratios range from 117.5 men for every 100 women in Saudi Arabia to a shocking 189.7 men for every 100 women in the UAE.
I have never heard of any major incidents of infanticide of girls in any of those countries and I am unaware of any special ability Arabs have to produce only sons. Does anyone have any idea of how these countries could get such large male populations?