Hi Bill
Very good question. Some animals was in these hunting areas long before we started ranching animals. So it was easy we did put up a fence and fenced them in, Limpopo had Kudu, Impala, Warthog, Duiker and many more species natural, so now you do have animals in there natural habitat just fenced in, but some landowners did bring more species to add to the property Sable, Rhino and more. Most of these hunting areas are 40 years and older yes new ones do pop up but it is very expensive and we can not move any animal without the permission from Nature conservation, they also do not allow animals that was not natural in the area to be introduce into a new area . This is what i do every year , we count the animals with helicopter, let say i count 20 trophy Kudu bulls on the property, then we work about how many we can hunt the next season, a Kudu bull will take anything from 6 to 9 years depending on genes to be a good trophy if ever. This now leave me with a number i can hunt every year, never more than 40 % of what trophy animals i do have, taking in consideration the number of young bulls that will be ready the next season, This leave us with the next question what about inbreeding remember we got them fenced in, i never add new bulls it just take to long for them to find a place in a breeding herd but if you introduce female or cows the first season you will have offspring from them and a new bloodline. I do not know of anybody buying a trophy Kudu and introduce it to a area just to hunt it in two weeks the risk of moving a big trophy animal is to high and it is to expensive . These old bulls will jump a fence or try to jump it. I have seen with my own eyes how a young Eland bull jumped a fence and i am talking 8 feet and a bit. If you hunt a area of good size ( o yes size does matter it is always about size ) you will find that the animals you hunt was born on the property and did grow up in the hunting area. So now we are back again to your first question what is a good size area to hunt?
Johan