The Eco Egg Birdfeeder is made of Bamboo. It"s functionality and clean lines make this platform feeder an amazing addition to any yard or patio. A galvanized cable for easy hanging and a galvanized screen at the bottom that allows for easy draining make this feeder user friendly. The dome is multi functional as a squirrel deterrent, it protects the seeds from the elements and keeps away large unwanted birds at the feeder. The diameter of the tray is 2 Inch deep and will accommodate a variety of bird foods. Each feeder has a 2 cup capacity.