Sound, scent, and movement - the 3 stalk busters.
One time I was crossing a 1/2 acre bare patch when a bull and cow walked out of the trees. I flopped on my butt and froze. They didn't see me and I didn't dare move. They were in some light brush and I couldn't shoot. I sat there for 10 min or more until some other cows in the brush made me. I was wearing camo but plain tan Carhardts would have been more what would blend into the dirt I was sitting in.
