im new in pigeon keeping and i got 6 young birds, thay were happy in the loft and when i started letting them out thay stayed round the loft flying around where i live getting higher and coming in when called then came the time to start taking them out i started of going 3 miles letting them go thay come back well then done the same again and thay disappeared for 3 days so i kepet them in for a few days to recuperate and tried again 4 of them have not come back and the other 2 come back 4 days later not shaw wots going on so any advice would be good