The 2 wires you see in the picture on the top attach to the bar of the cage. The millet/cuttlebone attaches in the center under the bowed out area in the picture. Any size cuttlebone is easy to use.
answered 1 month ago
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There are two metal hooks that will hang off of horizontal cage bars. They are malleable enough so that you can widen the hook angle to fit onto the cage and then pinch the hooks to a tighter more narrow position so that the holder won't move around.