Ditto on the trail cam . The larger and wider the print is the more likely that a buck made it . Dew claw marks mean little since both sexes have them , and softer ground will make their hooves sink . So you got 40 acres of land with a river and swampy ground ? I' d focus on any trails leading from the swamp to the river . Deer need about 1 quart of water for every 10 lbs of body weight daily for hydration and their digestive process . However , they may be able to get that from the swampy area without breaking cover . The edges where the open parts are would also be good areas to watch , deer love edges . Get to know your 40 like the back of your hand , soon you' ll know where they sleep and move . By the way , would you consider adopting me ? I have a job and I don' t eat much ...