I have been raising 15 chicks in their brooder / bitty cage. . Now they are feathered and the weather is warmer (in Florida), so I tried to transition them to the coop. They are 7 weeks old. Today, they met the only residents of the coop - - 2 Wyandottes that are 15 weeks old. The Wyandottes have been calmed and reserved birds until today. The invasion of the babies has not gone well. At last observation, one Wyandotte pulled two tail feathers out of one of my young leghorns. The babies are trying to avoid the Wyandottes, but that is not good enough for the Wyandottes. What should I do? Should the two bigger and older Wyandottes stop this aggressiveness soon. Should I pull the two Wyandottes out until the babies get bigger?