Very difficult to say. Some bears yes, others no. What was he doing there? This time of year a bear can eat for 20 to 22 hours a day. If there is food and plenty of it, then he may be back or another one. If food is scarce, then he might have been passing through on the lookout for food.
Basic way to judge size in a bear is by the ears and the legs. If he looks like he has long legs and radar dishes for ears, then he is most likely a smaller bear. If the ears look small and down on the side of the head as well as short stumpy legs, then "brace, breath, and squeeze"!