For birthfathers
The rights of birthfathers vary by state. Any father can be involved in an adoption plan if the birthmother agrees, although this is not always possible. Some birthfathers have the right to be notified if a child has been conceived or the child's mother is making an adoption plan, but many states require fathers to assert their parental rights within a given time frame, by registering with the state putative father registry or taking necessary steps to establish paternity.
If someone has fathered a child whose mother is considering adoption, then he should also share her concern for the child they have together. Even if the two are no longer involved, their child needs them to make important decisions about the child's future.
Ideally, if an adoption plan is made for a child, the birthfather will be involved in the counseling process from the beginning. In this way he can offer ongoing support to the child’s mother and ensure that his own wishes and rights are considered. Then the father and mother can consider their options together, and make the best possible plan for their child.