Question about feed and new chicks

[KentuckyChick]

I have 10 pullets and a cockerel that are on Layena. We recently got six chicks that are on chick feed inside in the brooder. When I add these chicks to the flock, what do I do about their feed? Do I switch them all to chick feed?

 

[gryeyes]

I have chickens of all ages in my flock. (Although the chicks 8 weeks or younger are in brooders, separate from the actual flock, and they get chick starter.) Everybody else gets grower/finisher feed, and I keep crushed oyster shell out free choice. I haven't bought layer feed in over a year.