I saw a pair of Juvie Snows in a cow pasture in NW IA in late May this year...I couldn't believe it. Since they were juvies I doubt they were nesting but I still thought it was really, really odd to see them there that late. They were mixed in with a bunch of honkers. This is an area that only rarely gets a few small flocks in the spring, and isn't really even in the flyway for snows. I did the same thing as you Ken, saw them and did a U-turn to glass them with the binocs to make sure I wasn't hallucinating or something. It'd be pretty cool to see them start nesting on the prairie.