Also, a semi related issue... I bought 3 chicks to give to mama hen about 2 weeks ago for planned arrival today. This was based on the assumption that her chicks would hatch between Wednesday and Friday and I could slip these 3 in on Friday at a day old. So I got the 3 chicks today, but did not put them under her as her eggs obviously have not hatched. Now my dilemma is this... how long do I have until she won't accept these chicks? And if I give them to her before her eggs hatch, will she stop sitting on her eggs? I really wanted to brood them with mama hen in the separate part of the run that she's in already to reduce integration issues later. Obviously if I have to, I'm prepared to brood them myself, but it's not a preferable option if I can help it.