Blue card and child birth in another EU state

Afaik you will need a passport, for my son we could get by post from the UK or we went to the Latvian embassy here in Malta and they gave us a temp travel permit so we can apply for his passport there in Latvia (ended up being the easiest option).  And for his SA citizenship we had to go to Rome twice.

It's a nightmare, but passport in his nationality is going to be needed before you can travel (or permit if your country supports issuing such)

Thank you for your reply. I asked around and it seems to be not a problem with getting Russian passport for baby being in Latvia. This takes a week or so. It seems they allow to be there until it's ready. Now the interesting part is what to do next. We sure can go to Russia. Then get a Maltese travel visa there for the baby. Then return to Malta and finally get a residence permit, but this sounds to much travelling with the little one. Plus the best would be to stay in Latvia for another month or two for the mother and the baby to have some rest after birth. I guess we will need to apply for a visa D there...