Two thoughts. Mother Nature seems to favor a 1:1 ratio given that is the normal birth rate in a healthy herd. Also, most big bucks are killed during the rut while they are searching, not actually locked down with a hot doe. Seems to me that an area with an over abundance of does would have the mature bucks in lock down mode most of the time as opposed to an area with a normal ratio where the bucks are doing as much or more actual searching rather than spending most of their time locked down.