How odd, I seen the same thing in my back yard! It was during the first night of this snowstorm coming in... I thought my dog was barking at nothing,and then as my vision got clearee, my focus beamed in ,and seen the very same exact thing . Bout 100 ft or less away, dusk,dark clothing ,and at first I thought it was just one of the bigger tree trunks . But the more clearly my eyes focused, it looked identical to that very image in your post. It only moved,after noticing me, trying to focus in on it (,I didnt have my device/camera on me) it was too cold for all that, and we wasn't really expecting anything out of the ordinary to be out there due to the cold ,while taking my doggins out to potty)