You say small but don't say just how small or what the surrounding area looks like....crops, woods, etc. Is the sign you are seeing in the form of tracks at the creek or obvious trails in the area? This could be a good opportunity to use a trail camera and you would have the chance to move it to several likely spots before the season. I have also used my climbing stand to go in as if I were really hunting using good hunting practices such as scent control and just observe. Be mindful however, that their patterns may change as you get closer to the season as food sources may be altered due to harvesting or other factors.