Yellowstone Moose

I came across this bull and a companion bull during my recent Yellowstone trip. Both bulls were bedded down in a creek drainage just off the road. Their antlers were visible, but they were a long way away. I decided to climb a ridge that ran close to the bulls and managed to cut the distance to less than a hundred yards. As it turned out, only one of the bulls was still visible after my long stalk. Lucky for me, it was the larger bull. However, he was still bedded down with only his antlers visible. As luck would have it, a tourist from the road decided to walk directly toward the bull; I guess to get a better photo with the point and shoot camera that he carried. I watched as the man closed the distance. I also kept my eye on the bull. Pretty soon, the bull locked in on the guy and began to get up from his bed. That is the moment that I captured here. You can tell by the bulls eyes that he is locked in on the guy. The bull eventually stood fully erect and stared at the guy. Luckily the guy stopped and returned to the road. I'm not sure the bull would have stood before daylight expired, if the guy hadn't decided to approach him.

Comments and critiques welcome.

Canon 7D
Canon 500mm f4 II
f4.0
1/100 s
ISO 160