Ornithology

NAUMANN, J.A. - DROSSELN.

Gera-Untermhaus, 1905.

NAUMANN, J.A.

Gera-Untermhaus, (1897).

RINGMÆRKNINGERNE.

Kbhvn., 1931-63.

IREDALE, TOM.

Melbourne, (1956).

NAUMANN, J.A.

Gera-Untermhaus, (1902).

DANSK ZOOTOPOGRAFISK UNDERSØGELSE.

Kbhvn., 1937-67.

ENEHJELM, CURT af.

Pfungstadt, (1957).

RIDGWAY, ROBERT.

Philadelphia, 1887.

THE AUK.

Lancaster, PA., 1929-35.

NAUMANN, J.A.

Gera-Untermhaus, (1900).

WHITE, GILBERT.

London, Swan Sonnenschein, 1887.

CHECK-LIST OF THE NORTH AMERICAN BIRDS.

Lancaster, PA., 1931.

GROSVENOR, GILBERT AND ALEXANDER WESTMORE. (EDTS.).

Washington, National Geographical Society, 1937).

DARLING, F.FRASER a. J.MARTON BOYD.

London, 1964.

FLOERICKES, KURT.

Stuttgart, Wiesbaden, 1922.

HOFFMANN, BERNHARD.

Bernburg, 1937.

FUGLENE VED DE DANSKE FYR.

Kbhvn., 1891-1939.

DANSK ORNITHOLOGISK FORENINGS TIDSSKRIFT.

Kbhvn., 1906-63.