Still cleaning off the old emails! Here's a friendly neighborhood Bumble resting after a hectic game of Bunnies and Bumbles, which, if you follow the link, shows I mentioned this over four years ago!
Mike's inspiration for the game was a set of solitaire rules for sheep herding from Wargames Illustrated. I used those same rules, with some modifications to run the sheep in my Battle of Yellowstone game from Fall-In! 2011.
Merry Christmas, Mike!