Unless he has a vehicle with him at the campsite, he's got to charge that cell phone some how. The longer you talk on them the faster the battery dies and the OP said he was talking.
He's got to be close to somewhere that he can charge the phone or it'll be dead soon. I suspect he is not far from his "home base" - wherever that might be. IF he is some kind of squatter he might have been looking for an easy meal (aka one of your chickens) to roast over the campfire.
Hunting gun season may not be open in your area (it is here), but bow hunting season is usually really long, like from October 1 till January 1 or something like that. Bow season requires full camo and stealth though, the OP didn't seem to think he was a hunter.