our boys let the 4 week old RIR chicks out to play in the grass every day. well wensday the got home from school and let them out and a Buff Orpington hen, we just got rounded them up and claimed them. so after a little fight we put her and the chicks in a place of their own. i hope she will take care of them. She had been setting on golf balls for the last few days since we got her and when she saw them chicks i guess she couldn't help herself.