Male Buggie Biting 2 Weeks Old Babbies

My Male Buggie attacked on 2 weeks old babbies today, the 1 one young baby was bleeding, then female attacked on male make him bleeding too,

everything was normal till 2 weeks the both male and female were feeding their babies with coordination of each other, why this happened ? is it normal behavior of male buggie towards babies.

I have changed the cage of male, will this effect the babies care because I have seen they both used to prepare food in their beaks and then they fed.

Please advice may I keep the male separate? or what please help in this regards