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Article
Katharina Reusch, Auteur ; Maëlle Connan, Auteur ; Peter G. Ryan, Auteur ; Mike Butler, Auteur ; Lorien Pichegru, AuteurOpportunistic species, including some gulls (Laridae), can benefit from urbanization and increased anthropogenic food resources. Knowledge of the level of exploitation of anthropogenic resources by gulls is crucial to understand how changes in f[...]
Article
Richard B Sherley, Auteur ; Azwianewi B Makhado, Auteur ; Robert JM Crawford, Auteur ; Christina Hagen, Auteur ; Jessica Kemper, Auteur ; Katrin Ludynia, Auteur ; Makhudu J Masotla, Auteur ; Alistair McInnes, Auteur ; Lorien Pichegru, Auteur ; Desmond Tom, Auteur ; Leshia Upfold, Auteur ; Lauren J Waller, AuteurThe African Penguin Spheniscus demersus has been considered a threatened species since 1984 and, aside from a short period around 2000, its population has been in constant decline since at least the 1950s. By combining counts of the numbers of b[...]
Article
Livio Favaro, Auteur ; Eleonora Cresta, Auteur ; Olivier Friard, Auteur ; Katrin Ludynia, Auteur ; Nicolas Mathevon, Auteur ; Lorien Pichegru, Auteur ; David Reby, Auteur ; Marco Gamba, AuteurAfrican Penguins Spheniscus demersus are endangered and declining seabirds which make extensive use of vocal signals for intra-specific vocal communication. Accordingly, passive acoustic monitoring tools could be developed as robust population m[...]
Article
Ralph Eric Thijl Vanstreels, Auteur ; Lorien Pichegru, Auteur ; Maya C. Pfaff, Auteur ; Albert Snyman, Auteur ; Bruce M. Dyer, Auteur ; Nola J. Parsons, Auteur ; David G. Roberts, Auteur ; Katrin Ludynia, Auteur ; Azwianewi Makhado, Auteur ; Pierre A. Pistorius, AuteurAfrican penguins (Spheniscus demersus) are pursuit-diving seabirds endemic to the coast of southern Africa. In this study, we investigate the presence of seashells and anthropogenic debris (e.g. plastic, glass, nylon) in the stomach contents of [...]
Article
Anouk Spelt, Auteur ; Lorien Pichegru, AuteurBiased offspring sex ratio is relatively rare in birds and sex allocation can vary with environmental conditions, with the larger and more costly sex, which can be either the male or female depending on species, favoured during high food availab[...]
Article
Peter G. Ryan, Auteur ; Lloyd Edwards, Auteur ; Lorien Pichegru, AuteurWe report co-operative group foraging in the African Penguin Spheniscus demersus. Groups of approximately 25-165 African Penguins were observed circling schools of pelagic fish, sometimes forcing them to the surface. During this behaviour 66-75%[...]
Article
Emilie Tew-Kai, Auteur ; Simon Benhamou, Auteur ; Carl D. van der Lingen, Auteur ; Janet C. Coetzee, Auteur ; Lorien Pichegru, Auteur ; Peter G. Ryan, Auteur ; David Grémillet, AuteurClimate change and fishing impact marine ecosystems, potentially modifying the availability of small pelagic fish to marine top predators. Some seabirds that primarily rely upon these resources have switched to feeding on fishery waste. It has t[...]
Article
Nicola C. Okes, Auteur ; Philip A. R. Hockey, Auteur ; Lorien Pichegru, Auteur ; Carl D. van der Lingen, Auteur ; Robert J. M. Crawford, Auteur ; David Grémillet, AuteurIn the southern Benguela upwelling ecosystem off the west coast of South Africa, seabird populations are decreasing dramatically because of reduced availability of pelagic fish. We tested the hypothesis that the west coast fishing industry is co[...]
Article
Sylvie Massemin-Challet, Auteur ; Jean-Paul Gendner, Auteur ; Sebastien Samtmann, Auteur ; Lorien Pichegru, Auteur ; Anita Wulgue, Auteur ; Yvon Le Maho, AuteurIn the mid 1970s, the breeding populations of the migrant White Stork Ciconia ciconia were close to extinction in the northeastern region of France (Alsace). A re-introduction project was implemented, resulting in the year-round settlement of so[...]
Article
Bonnie R. Lei, Auteur ; Jonathan A. Green, Auteur ; Lorien Pichegru, AuteurAfrican Penguins Spheniscus demersus naturally breed in guano burrows which provide shelter from predators and extreme weather conditions. Past guano harvesting has removed this habitat and artificial nests of different types have been deployed,[...]
Article
Drastic recent decreases in numbers of the 'Endangered' African Penguin Spheniscus demersus highlight the need for conservation efforts to reverse this trend. Habitat reduction due to former guano scraping forces penguins to breed in surface nes[...]
