The open mesh design allows birds to easily see the food, enabling them to eat through the sensible mesh holes. The bottom section with a fence for the birds to stand on makes it easy for them to stand on the feeder to eat and rest You can put bread pieces or suet cake etc n this square metal bird feeder cage, it can hold 12cm*12cm*3cm feed pieces, attracts cardinals, tits, house finches, birds of prey, bluebirds, warblers, pachyderms and more, a great way to add a different dimension to your balcony and garden. It can also be filled with materials for building bird nests, etc Made of metallic iron with a black anti-rust coating, it is durable and easy to clean The bird feeder has a removable lid which not only keeps the birds out of the rain or sun, but also makes it easy to fill with feed