What is the normal time frame for a deer' s gestation? A friend killed a mature doe today, that was pregnant.The unborn fawn had fur, and weighed a little over 9 lbs. I have never heard of a deer bearing a young this late in the year. Do we have an overpopulation problem? Why would this happen? It was killed on a green field in south Jefferson County near Brookwood, Alabama. She had one other doe with her, and they fed into the field about 10 mins before dark. We have seen several does(25) up to this point, but only 1 buck. Thanks for any help.