It never ceases to amaze me how they blend in. Many times I’ve had my eyes scanning for a deer and then one pop up at 20 yards, and I’m like “ where the heck did you come from”?
When I'm out running at the local state park, I do my best to try and spot them before they spot me and run off. Some are habituated to people, so they just sort of stare at me, but most are a bit of a challenge, especially as autumn sets in.