Introduce birds to foraging with the Creative Foraging Systems Vertical Holder. This durable polycarbonate vertical foraging box holder fastens to the side of any birdcage with the universal bracket. Please note that this is the holder ONLY and does not include the chipboard compartment inserts. If you would like both, please purchase our starter kit, or buy our Creative Foraging Refills. The Creative Foraging Systems Vertical Holder comes in two sizes, small and large.