@ YungRasputin: Yes, & great care would also have to be taken to ensure that no pathogens from captive non-native animals found their way into snakes bred for release, as that could negatively impact the wild populations- so you might have to limit what you worked with to ensure that didn't happen. I know that some zoos have ongoing projects to produce animals to replenish those in the wild- & I'm not speaking about snakes specifically, I just know that a zoo I used to frequent had such projects going for certain species.