Even though I'm new to hunting I've been out enough to know what you mean,they almost always catch me off guard unless it is a somewhat open area. In thick cover and their winter coat they seem invisable. The way they can walk for the most part silent on crunchy leaves and twigs when moving slow always amazes me. This is one reason I get so excited about getting even a small Doe,it to me is a rare triumph over these ghost deer.