AZ, I found your link to the Sonoran antelope's plight informative. I had no idea they were in such sad shape. I sure hope they can come back, but its looking pretty bleak.
About the fence jumping, I've always considered the antelope to be very intelligent and thought that their young literally learned how to jump from watching, rather than being a trait that is genetically passed on. We have a lot of antelope where I live and I watch them daily. I live on the edge of town, with lots of small acreages fenced off, so I get to watch them move from field to field without much effort. Some will go through, or under the wires, however most will jump & if one jumps, the rest follow by jumping as well. Maybe the Wyoming antelope can "teach" the AZ ones?