I know how you feel, We lost three. They were on roof tops for three nights next door, but wouldnt trap. Then they vanished and i was worried sick. But as my hubbie says it is part and parcel of having them. you cant make them come back just make it so they want to. You have to accept that you might lose some. It doesnt make it any easier when they go missing to be honest, but i have come to accept they may not always make it home :-/