So sorry to hear of this damo mate, with respect, if they were starving and HEALTHY they should respond quickly, i had 1 that sat out for 2 days, and would nt eat when it did come in, so obviously something a miss with it, its gone now. shame you have no obs to bring them down, are they eating on the fields or anything? But if its the same birds, that are doing it constantly, then they have to go im afraid, they will never learn. Young birds are a pain at times, How do the others trap? like lightening? they need to know your the boss. Stick with it mate.