Keep undesirable house finches and larger birds away from your finch feeders with this unique finch feeder. It"s designed to attract goldfinches, who can easily feed upside down while other species cannot. Holds up to 2 pounds of thistle seed or finch mix. Features plastic squirrel-resistant cap and perches. Cap slides along a hanging bail for ease of filling. Weather-resistant 18 inch feeder tube. Six upside-down feeding ports & perches. Feeder empties completely leaving no residue.