With the gestation period being approximately 200 days I can usually count back and pin point the breeding season / rut. Ours being in mid November. Truthfully, I never gave it much thought for other areas and how it effects your hunting season. I can't imagine seeing that young of a fawn during hunting season. Thanks for opening my eyes.
The general rule of the thumb is a fawn should be about 70-80 lbs going into our winter. After the last few mild winters, there was very little winter kill. Even the small ones make it through. I think, the more this happens the more spread out the breeding season will be in the future.