I,m sorry but your wrong,my trap is as follows,imagine a box with open ends the box is fitted inside the loft with the pad fitted underneath it,so the pad is within the confines of the loft,on the back of the box are bobwires so the bird can get into the loft without any of the others getting out,the front of the box is open and is flush with the outside of the loft, a landing board is hinged to this which is dropped down when the bird arrives home it lands on the landing board goes into the box and is clocked in,if it wants to it can then fly back out or go through the bob wires into the loft.