Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Hornbill"”.
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Fine-scale movements and habitat use of the Southern Ground Hornbill Bucorvus Leadbeateri
Southern Ground-Hornbills Bucorvus leadbeateri are listed as Endangered in South Africa and there is a concerted effort to reverse their population decline. Understanding the factors affecting their movement patterns and how they interact with their habitat is useful to inform conservation and …
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Individual contributions to group behaviour in the cooperatively breeding southern ground-hornbill Bucorvus leadbeateri
… cooperative breeder, the southern ground-hornbill Bucorvus leadbeateri. The large body size and exceptionally long lifespan of ground-hornbills leads to a “slow” life-history strategy, providing a striking contrast to most wellstudied avian cooperative breeders, which tend to be small, …
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Breeding and dispersal implications for the conservation of the Southern Ground Hornbill Bucorvus leadbeateri
… natural nesting sites. For the Southern Ground Hornbill Bucorvus leadbeateri that typically nests in natural tree cavities, the shortage of nesting sites is one factor potentially limiting population growth. The species is listed as endangered in South Africa, and vulnerable throughout the rest …
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Implications of climate change on the reproductive success of the Southern Yellow-billed Hornbill, Tockus leucomelas
… increased Tₐ. Breeding Southern Yellow-billed Hornbills (Tockus leucomelas) could be particularly vulnerable to high Tₐ due to their breeding strategy whereby the females are confined to the nest cavity for most of the nesting period. During this time their male partners are solely responsible …
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Conflict & Communication: Consequences Of Female Nest Confinement In Yellow-Billed Hornbills
The most striking feature of hornbills (Bucerotiformes) is their unusual nesting behaviour. Before laying, a female hornbill enters the nest in a tree cavity. Uniquely among birds, she then seals the nest entrance using her faeces and locally available materials, leaving a narrow gap only 1 cm …
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Handling the heat: managing microclimates for nesting desert hornbills
… the breeding success of Southern Yellow-Billed Hornbills Tockus leucomelas. Previous research suggests the impact of high air temperatures on hornbill nest success is mediated mostly (70%) through direct negative effects of high nest temperatures on chick growth. To address this, I tested …
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Effects of temperature and food availability on the reproductive ecology of an arid-zone bird
… data from a population of Southern Yellow-billed Hornbills (Tockus leucomelas; hornbills) in the Kalahari Desert. These hornbills are long-lived and have an unusual breeding strategy whereby the female seals herself inside the nest cavity for the majority of the breeding attempt, leaving the …