I have three 3.5 mo old barred rocks hens and one has the very red cheeks and has been acting a lil diff latly. Last night she was doing that odd clucking sound, turning in her box as if she might be getting ready to lay for the first time but she's only 3.5 mos old. Do they start this behavior long before they lay or only right before? My first chickens ever n I'm so clueless as to what to look for as in signs of them being ready to lay. Ty all for any input. I'm on egg watch! Lol.