Some areas of the country, mainly the south, will have a peak time of the rut, but due to the over population of deer and other factors bucks will, and do, breed at almost any time of the year. I have seen small spotted fawns at all times of the year and the only way that can happen is if the does are breeding year round. Young does can breed at six or seven months of age. Different parts of the country will also have a different peak rut time. Where we hunt in South Bama they are starting the peak rut around the third week of January and in the northern states I understand September may be their peak rut period.