Like someone said...yearlings are 1.5 year olds and where I hunt, have their own fawn(s) with them.

I do not hesitate to shoot a doe in early season, fawns in toe or not. And if a doe fawn hangs around...it gets it too. Most places I hunt, I stand to loose if the landowner knew I passed any antlerless deer up. There is no biological reason to fear that the fawns won't make it because their mom is gone.