My sumatra rooster has been "teaching" his new girls the ropes (19 weeks old, brahma, australorp and orpington) while his hen is brooding their 14 babies. Today I gave them a big row of nesting boxes. He jumped in and started making a nest in the hay and making laying sounds. The young hens just looked at him like he was crazy. (I guess I did too.) Is it normal for a rooster to act so motherly to young ones? He's been the mister mom since they were 8 wks old.