Prevue Pet Products Tear-Riffic Small Tunnel is ideal for satisfying a birds plucking, preening and nesting instincts. Birds will pluck at the fibers for nest-building or sleep in the nesting tunnels. Each toy attaches easily to any bird cage with twist ties integrated into the backsides. Our Small Tunnel toy is 8 1/4" Long and 4" Wide, ideal for Small to Medium birds.