I have two other females that are just now getting to breeding age.....10 to 20 years...one other cousin has a breeding pair from the family herd and no telling how many were given away over the 70 years Great Aunt Hazel kept them.....and figure if I can raise 20 or 30 more before it's my turn to pass on I'll at least have done something very very meaningful on this earth.
In the wild the survival rate right now is estimated at 1 in 100, while in captivity it rises to 3 in 10. They are just about goners in the wild.
Wierd is the opposing schools of thought on wild vs captive herds. Most big money efforts are pointed at saving the desert which I don't believe is possible anyways, and even if we do we have already intro'ed non-native preditiors and diseases that are just going to take them out anyways.
Best hope imo is captive herds and medical research, not desert conservation.