of course he does!
You can\'t just \"give\" a child a new parent, it is a very extreme step. the son already HAS 2 parents. She may wish it was other than it was but it just isn\'t. By making this step you are legally making someone else the parent of the child, and you have to consider what effect this might have on the child/parent in the future. it may sound nice to be 1 big happy family, but he isn\'t the dad.
Does the biological father of the son know he has got a son? does he see him? any contact? any maintenance? why isn\'t he on the BC? even if she dosen\'t know where he is, the courts don\'t usually accept that as a good enough reason to change the childs parent