The phrase "birth siblings" refers to people who share the same biological or birth parents.
Sentences with «birth siblings»
Social media helps family members stay connected, including birth siblings in different placements. (childwelfare.gov)
D.A. Blodgett — St. John's Adoption Search Program serves adult adoptees, birth parents, and birth siblings connected to an adoption facilitated through our agency. (dabsj.org)
Not just by their birth mothers but also by their birth fathers, birth siblings, birth grandparents and birth aunts - and - uncles. (lavenderluz.com)