H. T. Laycock

Umkhuseli Innovation and Research Management

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C.J. Stutterheim

Mammal Research Institute

Michael Gochfeld

Environmental and Occupational Health Sciences Institute

Joanna Burger

Environmental and Occupational Health Sciences Institute

Ali A. Murshid

A. J. Tree

B. D. Colahan

Salisbury University

Richard L. Bruggers

National Wildlife Research Center

Adrian Craig

Rhodes University

Irene M. Stutterheim

Cheetah Conservation Fund

John J. Tucker

University College London

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University of Pretoria

Environmental and Occupational Health Sciences Institute

Rutgers, The State University of New Jersey

Vanderbilt University

Johnson University

Rutgers Sexual and Reproductive Health and Rights

National Institute of Environmental Health Sciences

University of Cape Town

Mammal Research Institute

Zuid-Afrikaans Hospital

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MOULTING AND PLUMAGE CHANGES IN THE THICKBILLED WEAVER

Ostrich (1982)

H. T. Laycock

Summary Laycock, H. T. 1982. Moulting and plumage changes in the Thickbilled Weaver. Ostrich 53:91-101. Thickoilled Weavers were studied in captivity, in the wild and as museum specimens. Moulting follows the normal passerine pattern, but a difference from related species is that there is no post-fledging moult of the flight feathers. Methods were devised for identifying isolated feathers and for aging trapped birds, this being easier in the male. After the breeding season the male undergoes eclipse, which has apparently not been described before, and loses his white forehead patches. Adult males and females moult about the same time, but second-year males moult six or eight weeks earlier. The duration of post-nuptial moult is about four months and is timed to occur during the season when there is maximum food availability. The use of a “moult score” is avoided in this account and the timing of feather loss substituted as having more real meaning.

Plumage

Fledge

Captivity

Flight feather

10.1080/00306525.1982.9634732

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Citations (3)

AQUATIC BIRDS AT BLANTYRE

Ostrich (1965)

H. T. Laycock

10.1080/00306525.1965.9633873

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