The Droll Yankees Big Top wild bird feeder is constructed with clear polycarbonate, die cast metal and brass hardware. Squirrels and weather are scarcely a problem with the large 15" diameter dome and protected seed bowl. The feeder is adjustable to provide a variety of options that allow selectivity of both birds and seed type. A suet feeder or thistle feeder (not included) can be hung from the lower hook. 3 quart capacity.