Society finch rooster has three hens.?

He has kept three hens for himself in two nests. One nest has two hens with seven babies that all just hatched this week. The second nest has one hen with 4 eggs that she is sitting. My male visits back and forth taking care of the new hatched babies and sitting the second nest so this hen can have a break. This little guy is making 11 babies with three hens all at the same time. Is this normal for a society finch rooster, and if not should I change his name to Kong?