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Behavioural ecology of lesser sheathbills Chionis minor at Marion Island
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Biological Sciences
2015
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| _version_ | 1867613330727763968 |
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| access_status_str | Open Access |
| author | Burger, Alan Eckard |
| author2 | Siegfried, W R |
| author_browse | Burger, Alan Eckard Siegfried, W R |
| author_facet | Siegfried, W R Burger, Alan Eckard |
| author_sort | Burger, Alan Eckard |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/12545 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:34:25.395Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Department of Biological Sciences |
| publisherStr | Department of Biological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/12545 Behavioural ecology of lesser sheathbills Chionis minor at Marion Island Burger, Alan Eckard Siegfried, W R Ornithology Includes bibliographical references. Adaptations to island life have seldom been studied in birds outside temperate or tropical regions. Lesser Sheathbills Chionis minor (Charadriiformes; Chionididae) were studied at Marion Island (46°54'S, 37°45'E) and the ways in which their feeding ecology, breeding biology and social behaviour were adapted to existence on a sub-Antarctic island were assessed. The birds' reproductive output and post-fledging survival rates were estimated and probable factors limiting the population examined. Seasonal and spatial variations in the diet and foraging habits were related to the quality, availability and distribution of food, and the effects of interspecific competition, the weather and predators. The adaptiveness of the broad trophic niche was investigated. A hypothesis that the variable social behaviour facilitated exploitation of variable food resources to benefit individual birds was examined; particular attention was paid to territoriality among breeding (summer) and non-breeding (winter) adults within penguin colonies and flocking amongst birds foraging on the coastal plain. Time and energy budgets of birds feeding in these habitats were drawn up. Displays by Lesser Sheathbills were described and their functions in territories, flocks, at nest sites and in sexual interactions were quantitatively assessed. 2015-02-24T04:15:13Z 2015-02-24T04:15:13Z 1980 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/12545 eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Ornithology Burger, Alan Eckard Behavioural ecology of lesser sheathbills Chionis minor at Marion Island |
| thesis_degree_str | Doctoral |
| title | Behavioural ecology of lesser sheathbills Chionis minor at Marion Island |
| title_full | Behavioural ecology of lesser sheathbills Chionis minor at Marion Island |
| title_fullStr | Behavioural ecology of lesser sheathbills Chionis minor at Marion Island |
| title_full_unstemmed | Behavioural ecology of lesser sheathbills Chionis minor at Marion Island |
| title_short | Behavioural ecology of lesser sheathbills Chionis minor at Marion Island |
| title_sort | behavioural ecology of lesser sheathbills chionis minor at marion island |
| topic | Ornithology |
| url | http://hdl.handle.net/11427/12545 |
| work_keys_str_mv | AT burgeralaneckard behaviouralecologyoflessersheathbillschionisminoratmarionisland |