My old hen decided to go broody. My 1 year old hen and 3 year old hen had just hatched some chicks. The one hen has 4 1 week old chicks. The other has 8 couple day old chicks. The old hen Rosemary hatched 2 chicks. Then later i went out and couldn't find her 2 chicks. I looked under the hen with 1 week old chicks and they where under her. I don't know if i should leave them or put them back. The older chicks really like them they where all cuddling under the mama. Should i leave them or put them back under Rosemary?