I've had the same problem here with the bucks disappearing. I was feeding the same doe with 2 fawns for a month. I have not seen a buck around here for 2 months, at my house. I finally saw my first mulie buck about an hour ago. The weather has changed and is a lot cooler and I think the bucks will be up grazing around now. Get a Deer Acres block, if you can find that brand and leave it near your camera. The deer love that block because it's full of sweet cob type feed.