I believe they are starting here. I hunt about 40 minutes west of OKC. I saw two different bucks chasing does yesterday on Fort Reno (federal land). I also got a pic of about a 135" 8 point on my game cam earlier in the week. I have never seen him before and the picture was taken at 1 pm. That tells me he might have been after a doe during the middle of the day. The next two weeks should be prime.