Well, I finally broke down & bought a game camera. A WGI Model t5i3w . $70 @ Wallyworld. Haven't mounted it out back yet - do that manana. It was pretty easy to set up the options (time/res/still/video, etc. ). Had to buy an SD card for it - 32gb, I guess that's normal for all cameras now. Anyway here's the one I bought.
http://www.wildgameinnovations.com/products/game-scouting-cameras/blade-5x.html#.U_d93KNTZRc
http://www.wildgameinnovations.com/products/game-scouting-cameras/blade-5x.html#.U_d93KNTZRc