W. R. Siegfried | Researchain

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Publication

Featured researches published by W. R. Siegfried.

Ostrich | 1965

THE CAPE SHOVELLER ANAS SMITHII (HARTERT) IN SOUTHERN AFRICA

W. R. Siegfried

Ostrich | 1967

TRAPPING AND RINGING OF EGYPTIAN GEESE AND AFRICAN SHELDUCK AT VOGELVLEI, CAPE

W. R. Siegfried

Ostrich | 1965

THE STATUS OF THE CATTLE EGRET IN THE CAPE PROVINCE

W. R. Siegfried

Ostrich | 1966

ON THE FOOD OF NESTLING CATTLE EGRETS

W. R. Siegfried

Ostrich | 1966

THE STATUS OF THE CATIZE EGRET IN SOUTH AFRICA WITH NOTES ON THE NEIGHBOURING TERRITORIES

W. R. Siegfried

Ostrich | 1966

THE PRESENT AND PAST DISTRIBUTION OF THE BALD IBIS IN THE PROVINCE OF THE CAPE OF GOOD HOPE

W. R. Siegfried

Ostrich | 1966

RELATIVE ABUNDANCE OF RAPTORIAL BIRDS IN THE SOUTH-WESTERN CAPE

W. R. Siegfried

Ostrich | 1966

CASUALTIES AMONG BIRDS ALONG A SELECTED ROAD IN STELLENBOSCH

W. R. Siegfried

Ostrich | 1966

ON THE POST-EMBRYONIC DEVELOPMENT OF THE SOUTH AFRICAN SHELDUCK, TADORNA CANA (GMEL.)

W. R. Siegfried

Ostrich | 1967

THE DISTRIBUTION AND STATUS OF THE BLACK STORK IN SOUTHERN AFRICA

W. R. Siegfried

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