Ornithology

SALOMONSEN, FINN og GUSTAF RUDBECK (Red.).

Kbhvn.,(1962-61).

GOULD, JOHN.

.London, Printed by Taylor and Francis - Published by the Author, (1862-) 73.

MACKINNON, JOHN.

Yogyakarta, Gadjah Mada University Press, 1990.

THIENEMANN, J.

Neudamm, (1938).

SUTTON, GEORGE MIKSCH.

Norman, (1951).

ALI, SÁLIM.

Oxford, 1962.

BEWICK, THOMAS (AND RALPH BEILBY).

Newcastle, For T. Bewick, Longman and Co., 1826.

WILKINSON, E.S.

Shanghai, North-China Daily News & Herald Ltd., 1929.

PARSLOW, JOHN.

Berkhamsted, Poyser, 1973.

CHECK-LIST OF NORTH AMERICAN BIRDS.

Lawrence, (1983).

DEIGNAN, HERBERT G.

Washington, 1963.

SHARROCK, J.T.R.

Hertfordshire, (1976).

SNOW, D.W. (Edt.).

Oxford, (1971).

LACK, DAVID.

Oxford, Edinburgh, 1971.

BEWICK, THOMAS.

Newcastle, 1832.

SPRUNT, ALEXANDER Jr. a. E. BURNHAM CHAMBERLAIN.

Columbia, 1949.

FISHER, JAMES.

London, 1952.

AUDUBON, JOHN JAMES.

N.Y., 1966.