well you can , but I like to wait and make sure the hormones are in overdrive before I tuck them under if they are set in the bator and your hatch rates are good I would incubate in the bator tuck a few other eggs under the broodys and then at hatch I would tuck the chicks under and let her do the brooding ,,,,I think you are right! I have 2 that went broody today! Of course it was after I put eggs in the incubator on Friday -.- should I chance it and tuck them under them tomorrow night?