The hen above has four chicks. Two of them are completely hidden underneath her warm feathers. You can just make out the gray and white tail feathers of a third chick to the left of the one chick who isn’t quite ready to snuggle underneath her mother.
The seven chicks below are too big to snuggle under their mother anymore. She’s on the roost behind them, making sure they are safe on their roost. From late afternoon onward, the entire flock comes home to roost. The oldest ones are the first to bed. The mothers and chicks are next. The last to come in for the night are the young juveniles. Not much different than many people.