Hi, I've just bought 3 Isa Brown pullets. I'm just wondering how long I should keep the new chickens in their coop, so when I let them out into the garden, they know to go back into it at night. It's been years since I've had chickens, but I seem to remember having to go and find them in the bushes for a while, until they got to know their sleeping quarters. Also, they don't seem to be getting on their perch. Should I physically put them them on the perch? Thanking you.