Just after the buck walk offscreen, you can see a great horned owl falling fast through the air from the upper right (there's a slo-mo replay right after). I don't think the owl is actually diving at the buck; I think it follows the buck and falls on any little critter on the forest floor that the deer startles into scurrying away. I'm sure that's a hunting strategy that has proven effective over the hundreds of thousands of generations that owls have co-existed with deer. This sequence was captured between midnight and 1:00 am.

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