I purchased 4 6&7 day old Easter Egger chicks planning on putting them under a broody who's eggs failed to hatch, and an existing bantam cochin mother that has 2 3-day old bantam chicks. Both mothers are first time moms. I plan on adding the chicks late tonight, but I'm wondering if it's too late to add chicks to my existing mom's brood? Her chicks are around 1/2-2/3 the size of the new chicks since they are bantam mixes. My other hen is a tiny OEGB, so I'm not sure if she can keep all 4 standard chicks warm enough.