Another major component of the correct buck to doe ratio is the fact that there is a shorter more intense rut. Most of the does will be bred during the first estrous cycle. If you have more does than buckssome of the does will have a second estrous cycle and will be bred then instead of during the first cycle.

This may have two effects on the herd. The first being that the fawns will be born over a longer period of time and may allow predators to eat more of them. If they are all born during say a month long time frame instead of two months the predators will have a harder time preying on them. If the fawns are all born during the short time frame the predators may eat a couple when they are first born, and fill their stomachs. When they are ready to eat again the fawns will have had time to develop and hopefully be able to escape. If the fawns are born over a longer period of time there is less of them being born, and this gives the predators a chance at younger fawns during a longer time period. With me so far?

Also, if the fawns are born earlier in the year they will have more time to develop and grow before the winter arrives. And, should be in better shape to survive the winter.Lastly, I believe that taking the does also helps keep the population in check, and may improve herd health.