My chickens are weird. The go out rain or shine. It appears they like a nice shower and the worms the showers bring. The teenage chicken girls I have, run into the coop when it rains or the wind blows too hard. It appears the teens have more sense than the adult.
Mine are the same. Rain or shine there outside. They stand under the coop if it rains too hard. But will get impatient and come out sooner or later. They look like wet rats after a rain. Roosters tail will be dragging the ground. lol.