OK I think I have figured it out after all these years hunting them things,, They like my tractor, yes today it dawned on me that if I walk out on the back porch and the deer are in the orchard,, poof they are gonzo,,, but I was mowing over the hill along the orchard this morning,, 2 does and 3 fawns were eating apples and pears and never even paid any attention to me or the tractor. In fact one little fella came over like he was going to kiss the little Bouta about 10 feet away before he walked back to Mom.