i have a hen sitting on a clutch of eggs. they are in the coop, but in a big kennel. i know i need to provide chick starter and water for chicks, i have the feeders for that. but what about hen? just let her eat the chick starter? how long should i keep them in the kennel segregated from the regular hens/roosters/ducks? assuming mom will protect them, should i just leave the kennel open?