They sound good. I am getting pretty consistent on the tone of my calls. I have made most of them with gobbler bones and a few with hens. The hen bones are supposed to much better than the gobblers, but I know they both will call a bird. The far back left yelper (green and creme colors) is a call made from canada goose wing bones. They sound good too. I used a canada goose yelper to help harvest two birds this last spring.