they havent before because i thought something would try and take them. i mean there are 14 of them and i just dont want to lose any of them. i was gonna do it right before dark like at 6 to 8pm and i would be there with them but i dont want them to think they are free and just leave. my leghorns im scared will fly up into a tree and try and sleep there and i wont be about to get them down and also im scared that something will swoop down and kill one of my babies right in front of me. they have been in the coop long enough to establish that is where home is but i dont know if they will go back how should i go about doing this? ide like to trust them lol.