The Aspects Quick-Clean Seed feeders are now available in an attractive Spruce finish. This textured finish adds a high quality look and feel to the feeder. All Aspects Quick-Clean tubular feeders feature a revolutionary removable base that allows for easy cleaning of the feeder.Construction Polycarbonate.Mounting Hung or Pole Mounted Birds that use this feeder Wrens, Chickadees, Grosbeaks, Jays, Juncos, Nuthatches, Titmice, Finches, Goldfinches, Siskins, and Woodpeckers.Seed or Feed Options Black oil sunflower seeds, sunflower hearts, peanuts, safflower or a seed mixture.