Wiktionary
biological fathers
n. (plural of biological father English)
Usage examples of "biological fathers".
At common law, biological fathers had absolutely no rights to their illegitimate children.
Unmarried biological fathers are given legal rights to their offspring, and unmarried mothers are given legal rights to the biological father's paycheck.
She equated sex with affection and power and fantasized about being desired and forced by men in authority, including her legal and her biological fathers.