Yes,Yes,Yes. I let them go every yr. No matter what season I' m hunting. Not just button bucks, but fawns in general. Its easy to identify them even if alone. Simply look at their face. Fawns have that short young face. Another reason why I pass them up. You' ll only average around 18lbs of total meat after butchering a fawn. Why bother I say, let them grow another yr, and at least get some more venison off them.