More Birds Prism Oriole Nectar Feeder has a wide-mouth glass nectar bottle. Large perch areas are specifically designed for orioles. Flat bottle top stands for easy filling and fully disassembles for cleaning. The folding perches save on shelf space and shipping. Holds 20 ounces of nectar. 11.5″ H x 9.25″ W x 9.25″ D.