this is a little info on the does breeding activity..i copied and pasted...

The heat or estrus period in the doe lasts about 24 hours.  If the doe is not bred during this time period the doe will come into heat again in about a month.   A doe that has not bred is capable of coming into heat about 5 times during the year.  The gestation period of the typical white-tailed deer is about 7 months.   If a doe is giving birth for the first time she will usually have 1 fawn.   Older does usually give birth to twins and when conditions are really good, triplets.


if this is true.... obviously most does are bred during the peak "rut" but some may get missed or skipped and could be bred much later.... I still havent found any info on whether a buck without antlers can breed or not...but im still looking!