Shooting Stereotypes

GREELEY, Colo. -- Snow beat a steady rhythm on the back of Rodney Rexwinkle's neck, quickly congregating in piles on anything flat enough to hold it.

Big flakes drove down hard and wet, the kind you get from a Rocky Mountain blizzard.

It was what you would expect in Colorado in November. Rexwinkle and Josh Montague were surrounded by cattails in a marsh just outside of Greeley, and not too far from the Rocky Mountains.

But there were also some things you might not expect.

In front of them was a small pond surrounded by cattails. All around the pond, mallards were transferring around in singles, pairs and flocks, all looking for a place to get out of the...