Ornithology

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AAGAARD, C.J.

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HOLSTEIN, VAGN.

Kbhvn., 1942.

GOODWIN, DEREK.

London, 1967.

LOWERY, GEORGE H.

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PETERS, HAROLD S. a. THOMAS D. BURLEIGH.

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SIBLEY, CHARLES a. JON E. aHLQUIST.

New Haven, London, (1990).

LOW, ROSEMARY.

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BEITRÄGE ZURVOGELKUNDE.

Leipzig, 1949.

AUSTIN, OLIVER L. a. NAGAHISA KURODA.

Cambridge, Mass., 1953.

SCHÜZ, ERNIT.

Stuttgart, 1959.

OAKES, CLIFFORD.

Edinburg, London, (1953).

ABBOTT, CLINTON G.

London, 1911.

CORY, CHARLES B.

Chicago, 1909.

STEWART, ROBERT E. a. CHANDLER S. ROBBINS.

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REICHENOW, ANTON.

Stuttgart, 1913-14.

MARSHALL, A.J.

Oxford, 1954.

BENNETT, R.B.

London, 1961.