just a few points to point out ,first leave the top off untill they are entering the trap ,then place the top on say after a few days after the crows are uesd to going in to it ,keep the bait topped up ,only go near the trap after dark to kill any unwanted crows ,as crows arnt that daft really ,if they see you killing there buds they will stay well clear of the trap ,always keep a few in the trap to draw others in .you can put many lights {cows lungs ,hart ,liver,ect out in the middle of a field untill the crows have found them ,then put your trap over the top of the lights for a day or so ,t