@meepycat - what I wrote before was true for the form we filled out at the hospital. Funny story ensued since that post about the actual birth certificate though... The hospital told us to wait a couple weeks and then the cert should be ready at the town hall. So DW goes to pick it up one afternoon and it lists her as the father. Well it had been a long day and she just wanted to get home, so rather than protest she just gave the clerk a look and said something like "seriously?", and left. So, the next day a new copy of the cert shows up in our mailbox with a post-it that says sorry for the mix up. on the new one DW is listed as "second parent". So apparently there are two different versions of the MA birth cert, and it is up to the town clerk to print the right one. Must be tough for them to guess with gender-neutral names. My DW however has a very traditional feminine name, so not sure what went wrong there.