I have hunted Rosebud twice, plenty of birds. As far as killing a sure enough Merriams, other birds (Rios) have been transplanted in areas and they have mixed, the locals call them "dirty birds". You will be glad you have a guide, the tribal land is not all one big area, but many areas broken up within private property and not marked with signs. Your tribal license is no good once you step off the tribal land, our guide knew the place well, and had us in birds the entire time. There is a casino at the Nebraska border just up from Valentine, that has good accomodations as well as buffet dinner in the evenings. I have heard mixed reviews on the guides, but the guy we used was excellent, he had a great sense of humor and knew that reservation very well. Mount a tail fan on a brown plastic clothes hanger with zip ties, you can fan birds up there. I have heard Pine Ridge is very good too, we just never went there.