Blood, identity, and position are discussed in this project. Racing pigeons live via ties of blood and fly in flocks. Just like human families, the elements of lineage and identity intermingle with each other and constitute a systematic group. When I look at my family’s group photos, memories will rush to my mind. Incredibly, when I am confronted with these familiar faces, no matter what social positions the individuals in the group photo have, lineage could undoubtedly maintain their relationship.