We have two five-week-old chicks that were hatched by a 1-year-old RIR. When the chicks were about 4 weeks old, the RIR lost interest in them and is back to moving with the rest of the flock. The chicks started following a 3-year-old Ohio Buckeye hen who has never been broody and is generally a crabby hen. After a few days, the Buckeye has begun clucking to the chicks, makes sure they are with her at all times and roosts with them at night. We have never seen this before. Has anyone ever had another hen "adopt" chicks?