A Harris’ or redtail, trained properly and flown at the correct weight is unlikely to be lost, but they ARE regularly lost by inexperienced falconers, and it is likely most will not survive in the wild. Tracking equipment is NOT a shortcut to training a hawk properly, but is the next best thing to a guarantee that you will get your hawk back if anything unforeseen occurs, and is therefore well worth considering if it can be afforded. A good system is probably going to cost more than the bird, but remember that you keep the system for many years, and it will help to locate lost hawks time and time again. NEVER buy a cheap system. You will not have an effective guarantee if it goes wrong, and they are ALWAYS inferior in operation.