Alex mentioned this to me in person and then forgot to write it down: :P
Apparently something that the dads covered is that new mommies can be VERY territorial about not wanting to share the care of the baby. This was a REALLY common experience among the attending daddies. For instance, it's apparently pretty common for the mom to not feel like she can leave the baby unsupervised with the dad.... some kind of idea about him being "just a man" so he'll break the baby?
I thought it was really interesting that this would be an issue. I guess I was surprised because I wouldn't have thought of having kids if I didn't think Alex was going to have a big share in taking care of them!