A lot of bird food - in the best case a seasonally adapted mixture of nuts and seeds, seeds, dried insects and dried berries - fits into this feeding column. The advantage of the tube shape is that the food stays dry in it during rain and snow. Four feeding places with approach rod are available. They are made of cast aluminum, as are the lid and base. The tube itself is made of polycarbonate and is easy to keep clean. We recommend the occasional use of a bottle brush to thoroughly clean the inside of the tube. To do this, simply remove the bottom of the feeder. Just remember to use only warm water and no detergents or cleaning agents.