Im going to begin training my hunting dog soon and I got some pigeons from a friend of mine > Along with some racers he also gave me some ground tumblers that dont fly  they sit still till you walk up to then then they run and tumble, would these be of any value and or has anyone ever used them before  thanks  Mike

Ya you could use them for the dog to follow their sent threw tall grass, just have the birds walk a trail then grab them and plant them under some grass, and have your dog "hunt them up"