In addition to snowy owls, there were also short-eared owls at Boundary Bay, as well as plenty of harrier hawks. The two didn’t like each other very much and they were constantly trying to steal each other’s lunch — in this case, a vole. The harrier attacked the owl in mid air and the battle was on. As you can see in the third picture, the owl came out on top and was able to retain rights to a hard fought meal.
Nikon D800 with Nikkor 200-400mm lens (at 290mm) ISO 1000, f/4 at 1/1250th of a second