A while back, I gave them a good go, the Rio Grande was visible, maybe a couple hundred yards away. I saw a few, but came up empty, for me it was very brief glimses. I hunted clumps of nasty, thick brush, basically impossible for any sort of decent dog work, for the areas I was in. Mesquite, great for wood charcoal, but much of it was thorny brush, it was no fun. It was just some very limited experiences, I'm sure other have had much better, but I don't know if I would be over tickled being in isolated brush that far south nowadays. Go get 'em Stan, maybe you can also pick up a whitewing if you haven't gotten one of those before. Best of luck.