Mound City, MO is known for it's spring snow goose hunting, and has the Squaw Creek Wildlife Refuge where a million plus snow geese stop during the peak migration. A group of us went out there a few years ago, and it was a fun trip. Of course, we went on an "off" year for snow goose hunting. The guide we went with is no longer in the business. It's a good place to look into though. Good luck!
So many things to hunt, but too little time.