I swear I think it' s being bred into their instincts or something. I' ve actually watched deer walking along....looking around up in the trees. It' s almost predictable now. They just look for trouble I guess. I usually get stared at plenty of times during the season...majority of the time they dismiss me and go on about their business(if I don' t screw up). It just seems weird to me to see how much they look up now. 20 years ago they never looked up at all it seemed.