大鸟笼：几乎看不见的缆网围蔽

Design a walk-through aviary in the manner of Frei Otto's Munich Zoo aviary — a five-thousand-square-metre enclosure made only of a fine steel mesh net slung from a few slender masts, so the boundary is almost invisible and visitors walk under it among the trees. Compose a vast delicate wire mesh canopy sagging gently between tall thin masts and ground anchors, mature trees and a stream continuing straight through the enclosure, birds in flight against the net, a timber walkway below, dappled forest light through the mesh, eye-level view upward through the net, 24mm lens, architectural photography, ultra photorealistic, 8K