that could be just as in effective if i lost 3 birds in one week at back end of season and continued to let them out i wouldnt have a team left by now even if i gave them all machine guns and machettis , but now i dont have a hawk problem again and its not been seen the birds will have plenty of time to get themselves fit again , and hopefuly the hawks either starved to death or found another food source , but just because it's not around anymore i still need to be with the birds throughout there exercising when the time comes