Feeder base combines with the Little Giant 1-Quart Screw-On Feeder/Waterer Jar (Item No. 51569, sold separately) to make a gravity feeder for baby chicks and small birds. Features eight openings, with ribs to minimize feed overflow and spillage. 6.375 inch diameter by 2.5 inch high. Made of heavy-duty polypropylene. Available in several colors to mix and match.