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Developing a site selection tool to assist reintroduction efforts for the Southern Ground-Hornbill Bucorvus leadbeateri
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Dirk Cilliers --- Unit for Environmental Sciences and Management, Potchefstroom Campus, South Africa Steven Evans --- Unit for Environmental Sciences and Management, Potchefstroom Campus, South Africa Hendri Coetzee --- Unit for Environmental Sciences and Management, Potchefstroom Campus, South Africa Leon van Rensburg --- Unit for Environmental Sciences and Management, Potchefstroom Campus, South AfricaThe Southern Ground-Hornbill Bucorvus leadbeateri (SGH) is regarded as Vulnerable globally and Endangered in South Africa as a result of losing close to 70% of its range and 50% of its historic population in the country. One of the conservation... -
Egg-capping in the Southern Ground-Hornbill Bucorvus leadbeateri
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kathleen F Carstens --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa‘Egg-capping’ describes occurrences of the empty shell from a hatched egg slipping over an unhatched egg from the same clutch. It is a rare phenomenon, occurring typically in <2% of nests monitored. Here I report the first two observed cases... -
Breeding density of the southern ground hornbill, Bucorvus leadbeateri, in the communal areas surrounding the Matobo National Park, Zimbabwe
Item type: Journal Article • Journal: African Zoology • Authors: Minke Witteveen --- University of KwaZulu-Natal, South Africa Elspeth Parry --- , South Africa Mark Norris-Rogers --- School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, South Africa Mark Brown --- University of KwaZulu-Natal, South AfricaThe southern ground hornbill, Bucorvus leadbeateri, is on the IUCN Red List of Threatened Species as a ‘Vulnerable’ species with a decreasing population. Despite a myriad of threats, including loss of nesting sites, accidental poisoning and persecution, there has been... -
Seasonal changes in movement and habitat use by Southern Ground-Hornbills in the South African lowveld
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Blair A Zoghby --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Peter G Ryan --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Rob M Little --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Tim Reid --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Philip AR Hockey --- ,Southern Ground-Hornbills Bucorvus leadbeateri are Endangered in South Africa and there is a concerted effort to reverse their population decline. They live in groups year round, with only the alpha pair breeding, raising at most one chick per year. Each... -
Diet of the Silvery-cheeked Hornbill Bycanistes brevis during the breeding season in the East Usambara Mountains, Tanzania
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Norbert J Cordeiro --- Department of Biological, Chemical, and Physical Sciences, USA Joshua T Campbell --- Department of Biological, Chemical, and Physical Sciences, USA Henry J Ndangalasi --- Department of Botany, TanzaniaThe breeding season diet and nesting characteristics of the Silvery-cheeked Hornbill Bycanistes brevis are poorly known. To further understand these aspects of the breeding biology of this hornbill species, 14 nests were studied in and around Amani Nature Reserve located... -
Patterns of roost site selection and use by Southern Ground-Hornbills in north-eastern South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Blair A Zoghby --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Rob M Little --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Peter G Ryan --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Philip AR Hockey --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South AfricaDifferent habitats may be used for the needs of various aspects of an animal’s life. Southern Ground-Hornbill Bucorvus leadbeateri groups announce their presence within year-round territories by calling at dawn from their overnight roost sites. Knowledge on ground-hornbill roosting habits... -
The simultaneous moult of female hornbills is not triggered by the darkness of their nest cavity
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mark Stanback --- Department of Biology, Davidson College, USA David Millican --- Department of Biological Sciences, USA Paul Visser --- Cheetah Conservation Fund, Namibia Laurie Marker --- Cheetah Conservation Fund, NamibiaA verbal model from 1937 proposed that the darkness of the nest cavity acts as a proximate trigger for the simultaneous moult observed in female hornbills. Although never tested, the plausibility of this hypothesis has allowed it to be cited... -
Natal dispersal in the Southern Ground Hornbill Bucorvus leadbeateri
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kate F Carstens --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Reshma Kassanjee --- Department of Statistical Sciences, South Africa Robin M Little --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Peter G Ryan --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Philip AR Hockey --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South AfricaDispersal is of ecological and evolutionary importance for population biology because it affects a species’ ability to expand its range, to colonise new favourable habitats and to increase the likelihood of population persistence. Male birds are mostly philopatric, delaying dispersal... -
Monteiro’s Hornbills Tockus monteiri do not exhibit addition indeterminacy
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mark T Stanback --- , United StatesBirds that respond to the addition/removal of eggs by laying fewer/extra eggs are known as indeterminate layers. Species that are insensitive to additions/removals are said to be determinate layers. Hornbills are an interesting group with which to investigate this phenomenon,...