Single bluebird or blue jay Stangl Pottery traces its history back to the Fulper Pottery of New Jersey. In 1910, Johann Martin Stangl started working at Fulper. He left to work at Haeger Pottery from 1915 to 1920. Stangl returned to Fulper Pottery in 1920, became president in 1926, and changed the company name to Stangl Pottery in 1929. Stangl bought the firm in 1930. Fulper Pottery's name was not officially changed to Stangl Pottery until 1955, but dinnerware made by the company was marked Stangl since 1930. The pottery is known for dinnerware and a line of bird figurines. Martin Stangl died in 1972 and the pottery was sold to Frank Wheaton, Jr., of Wheaton Industries. Production continued until 1978, when Pfaltzgraff Pottery purchased the right to the Stangl trademark and the remaining inventory was liquidated. A single bird figurine is identified by a number. Figurines made up of two birds are identified by a number followed by the letter D indicating "Double."