Because of its large capacity, when the Perky-Pet 209 is filled with sugar water, it weighs 56oz or 3 1/2 lbs. Unlike many other feeders, the hanging wire doesn't fit around the glass bottle, instead it has a screw-on plastic top which has a wire threaded through it. With the short (7") and thin flexible wire supplied, you can't just bend the wire into a hook shape, you must tie a very sturdy knot at both ends of the wire (not that easy, even with a thin wire). Or, you must scrounge a better wire that is strong enough to hold the heavy Perky-Pet and yet thin enough to fit through the tiny hole in the top of the plastic. Or, get out a drill, drill a larger hole and use a decent piece of wire to hang the darn thing. If the new wire is too large though, it will interfere with the cap screwing onto the bottle.