Low-poly origami cranes fly in formation with flapping wings against a warm sunset sky gradient. Each crane is hand-built from flat triangular BufferGeometry panels representing folded paper facets, with a lighter and darker material simulating light catching each crease. The flock follows a single leader curve while individual birds slot into a V-formation using offsets rotated into the leader's local right/up/forward basis, and wings hinge on pivot groups driven by a per-bird phase-offset sine wave so the flapping reads as organic rather than synchronized.