This paper explores the effects of the foster care experience on foster parents' biological children. In spite of having been accepted for over 40 years as the best form of residential care for most children and adolescents requiring alternative living arrangements, very little research has been done into the foster care experience. Almost nothing is known about the effects of foster care on either the foster family as a unit or its individual members, yet one of the major concerns foster parents present is the effect of the foster care experience on their own children. This concern leads many experienced foster families to leave foster care and many potential foster families to decide not to foster. This paper discusses the losses experienced by the children of foster parents.