Is the natural father's consent to the adoption necessary?
Yes, if the identity of the natural father is known. When the identity of the natural father is not known, a formal adoption can be finalized without his consent. However, this could affect whether or not the adoption is truly final, should the father's identity later become discovered. In this situation a court would be called upon to make the decision, especially where the natural father discovers that he is the father and wants to assume parental rights along with the responsibilities.