Abstract
Children's foster care is practised and studied in many parts of the world, but little attention is paid to foster parents' birth children, despite their right to participate in a process that concerns their lives and despite the role they play in foster care. Drawing on qualitative data collected from 15 foster siblings and 14 foster parents, this paper presents birth children's experiences with the beginning of foster care, their perceptions of the positive and negative aspects of living with a foster child, and their suggestions for foster parents, foster children, and professionals. The data reveal that birth children feel engaged in a caregiver role; therefore, they need guidance with regard to this role. However, social workers and other professionals do not appear to fully recognize this role. Implications for practice are discussed.