Usualy with a boar bear the ears look smaller because of the big head. You have to see enough of them to be able to tell the difrence. A male bear will grow about a third bigger than a sow?
Hope this helps.
That's tough, since young boars can look like old sows. But if you have a big boar it starts to get easier because the head is beefier and they tend to have a more burly walk. One of the nice things about Alaska is you can hunt over bait. Although some people will debate that choice, it makes for a lot fewer mistakes. You have more time to study the bear, think it over, look for cubs, etc.
Tough call to tell between a boar and a sow. In addition to the info the others have posted, try to form a triangle between the ears and the tip of the snout. A large bear will have almost a perfect triangle shape, whereas a younger bear will have an uneven triangle. Also, a female will have a shorter snout compared to a boar who will have a snout more like a german shepard's.
Don't assume that when fall comes, or hunting season, that the big bucks, and big bulls leave. Whitetail deer bucks especially, simply hide. And they hide very well. Mule deer bucks may leave a little. Bull elk may leave, but don't assume they do. Don't assume any of them do. I mean - where would they leave to? (Just another place where, for the most part, they would be hunted.) These big animals have the ability to hide in very small, very obscure places. So, embrace the fact (...