. >> reporter: ryan gilroy, founder of wildlife partners, isn't against hunting but he has a very different >> all the revenue we generate is generated as a result of selling live animals. and we're not selling them for the purpose of hunting. we're selling them for the purpose of breeding. this area that we're in is broken into several smaller pastures -- >> reporter: brian has around 1,000 animals at this ranch. >> we raise roan antelope, cape buffalo, white bearded wildebeest, bongo. i could go on. >> reporter: they says they've made $30 million in revenue over the last two years breeding and selling animals to hundreds of clients. which include landowners and private investors. >> we sell them wildlife for the benefit of enjoyment. and it's theirs. they can do what they want with it. >> reporter: when those animals reproduce, brian's company buys back some of their young, selling them to other customers. . >> we've got some young offspring that we're going to be moving to another ranch -- >> reporter: on this day they get a request for a >> in the helicopter we've got a gunner, he's got