Rat breeding?

[damzookeeper]

Hi, I have a 1.2 group of rats and I believe both females are pregnant. I think on is actually giving birth now. I have left the male in with them, is this alright. I know it's acceptable with mice so I figured the same goes with rats. The male seems a little frantic every time I hear the 2 females make noise (they are in their hide and I belive one is giving birth and the other is just in there with her.) Should I remove him or just leave them be. Do the females sometimes make squeeking noises when they are delivering or is the other female possibly bothering her?
Any help would be appriciated. I wanted to get on sooner to ask but didn't have time. I just noticed how big they were 2 days ago, compaired to the male.
These will be my first rat babies. Should I leave them keep this litter or can I pull them. This will be their first, I don't want them distroying any future litters before I can pull them and I heard that they sometimes do this, I'm not sure how true it is though since my mice never did this.
Thanks in advance. You can post here or pm me.
Sincerely, Deb.
P.s. these three rats are my pets btw, but their babies will be feeders.