Ostrich最新文献

{"title":"The effects of habitat loss and fragmentation on the relative abundance and conservation of Ludwig’s Bustard Neotis ludwigii in South Africa","authors":"Steven W Evans","doi":"10.2989/00306525.2023.2265569","DOIUrl":"https://doi.org/10.2989/00306525.2023.2265569","url":null,"abstract":"Ludwig’s Bustard Neotis ludwigii is near-endemic to the semi-arid shrublands of southwestern southern Africa and is listed as Endangered. The primary threat to this species is collisions with overh...","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":"8 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138516172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The avifauna of Niokolo-Koba National Park, Senegal: a review of historical and recent ornithological records","authors":"John B Rose, Oliver JL Fox, Bram Piot, Philippe Delaporte","doi":"10.2989/00306525.2023.2270776","DOIUrl":"https://doi.org/10.2989/00306525.2023.2270776","url":null,"abstract":"We present the results of a review of the bird species historically observed in Niokolo-Koba National Park, a World Heritage Site and 913 000 ha natural protected area in southeastern Senegal. In c...","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":"20 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138516174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Population size, habitat use and foraging habits of wild Helmeted Guineafowl Numida meleagris in southwestern Ethiopia","authors":"Yihenew Aynalem, Afework Bekele, Bezawork Afework Bogale","doi":"10.2989/00306525.2023.2266773","DOIUrl":"https://doi.org/10.2989/00306525.2023.2266773","url":null,"abstract":"The Helmeted Guineafowl Numida meleagris is a widespread and abundant resident gamebird species in sub-Saharan Africa. It is hunted throughout the region, including in Ethiopia. However, knowledge ...","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2023-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138516168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Huddling in the heat? Rarely seen thermoregulatory behaviours as Southern Pied Babblers <i>Turdoides bicolor</i> compete for cool microsites","authors":"Amanda R Bourne, Camilla Soravia","doi":"10.2989/00306525.2023.2269477","DOIUrl":"https://doi.org/10.2989/00306525.2023.2269477","url":null,"abstract":"AbstractHuddling is an important thermoregulatory behaviour used by many group-living endotherms to conserve energy during cold weather or periods of food scarcity. It is not typically considered a strategy for keeping cool during hot weather, largely because endotherms produce body heat which can aggravate heat discomfort. However, we recorded 423 instances of huddling behaviour at high temperatures in an arid zone endemic bird, the Southern Pied Babbler Turdoides bicolor (family Leiothrichidae), in the southern Kalahari Desert. Huddling was most often observed on the ground at the base of trees, and is likely to represent competition over access to limited cool microsites during extremely hot weather rather than being a specific thermoregulatory behaviour in itself.Se blottir dans la chaleur? Comportements de thermorégulation rarement observés comme conséquence de la compétition pour des microsites frais par les Cratéropes bicolores Turdoides bicolorLe fait de se blottir les uns contre les autres est un comportement thermorégulateur important utilisé par de nombreux endothermes vivant en groupe pour conserver de l’énergie par temps froid ou pendant les périodes de pénurie de nourriture. Ce comportement n’est généralement pas considéré comme une stratégie pour rester au frais par temps chaud, principalement parce que les endothermes produisent de la chaleur corporelle qui peut aggraver l’inconfort dû à la chaleur. Cependant, dans le sud du désert du Kalahari, chez un oiseau endémique des zones arides, le Cratérope bicolore Turdoides bicolor, nous avons enregistré 423 cas d’individus qui se blottissent ensemble (corps-à-corps) pendant des périodes de températures élevées. Le fait de se blottir était le plus souvent observé au sol, à la base des arbres, ce qui suggère que ce comportement est une conséquence probable de la compétition pour l’accès à des microsites frais qui sont rares par temps extrêmement chaud, plutôt qu’un comportement de thermorégulation en soi.Keywords: avian thermoregulationbehavioural thermoregulationclimate refugeKuruman River Reservemicroclimatessouthern Kalahari","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":"124 24","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135138313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diversity and abundance of avifauna in the Suba Forest area, central Ethiopia","authors":"Gemechis B Mosisa, Nega Tassie, Sintayehu W Dejene","doi":"10.2989/00306525.2023.2274360","DOIUrl":"https://doi.org/10.2989/00306525.2023.2274360","url":null,"abstract":"AbstractBirds are one of the best-described taxa, but detailed knowledge about most bird species in Ethiopia remains rare, which hinders the development and evaluation of conservation strategies in the region. In this study, we estimated bird species diversity and abundance in the Suba Forest area (comprising natural forest and adjacent plantation forest and farmland) in central Ethiopia, during the dry and wet seasons in 2021. Bird data were collected using line transects or point counts in each habitat type. Two-way ANOVA was applied to evaluate the effect of habitat and season on bird species richness and abundance. A total of 132 bird species belonging to 51 families were recorded during the study. Of these, 124 are residents, 4 are endemic to Ethiopia, 11 are endemic to Ethiopia and Eritrea, and 4 are near endemics (one largely confined to Ethiopia and the others with their core populations in Ethiopia and Eritrea). Habitat type and season both had significant effects on species abundance and richness. Species diversity was highest in natural forest during the wet season, and lowest in farmland during the dry season. Plantation forest and farmland shared similar avian communities, with both being human-altered habitats in close proximity to each other. Native forest supported the highest number of bird species, which confirms the Suba Forest area’s great potential for biodiversity conservation and sustainable wildlife tourism. Continuous monitoring of this area and effective implementation of conservation measures will provide beneficial outcomes for not only avifauna but other taxa.Diversité et abondance des oiseaux de la forêt de Suba, Éthiopie centraleLes oiseaux sont un des groupes les mieux décrits de la biodiversité terrestre, mais les connaissances détaillées sur la plupart des espèces d’oiseaux en Éthiopie restent rares, ce qui entrave le développement et l’évaluation des stratégies de conservation dans la région. Dans cette étude, nous avons estimé la diversité et l’abondance des espèces d’oiseaux dans la forêt naturelle, la forêt de plantation et les terres agricoles de la forêt de Suba, en Éthiopie centrale, pendant la saison sèche et et la saison des pluies de 2021. Les données sur les oiseaux ont été collectées à l’aide de transects linéaires ou de points de comptage dans les trois habitats. Une ANOVA à deux facteurs a été utilisée pour évaluer l’effet de l’habitat et de la saison sur la richesse et l’abondance des espèces. Au total, 132 espèces d’oiseaux appartenant à 51 familles ont été identifiées au cours de la période d’étude. Parmi elles, 124 étaient résidentes, 4 étaient endémiques à l’Éthiopie, 11 étaient endémiques à l’Éthiopie et à l’Érythrée, et 4 étaient des ‘presque-endémiques’ (une presque entièrement confiné à l’Éthiopie, et les autres avec la plus grande partie de leurs populations entre l’Éthiopie et l’Érythrée). Le type d’habitat et la saison ont eu des effets significatifs sur l’abondance et la richesse des es","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":" 29","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135290883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Breeding ecology of the Cream-coloured Courser <i>Cursorius cursor</i> (Glareolidae) on semi-arid grazing land in Souss-Massa National Park, southwestern Morocco","authors":"Yassine Teyar, Dimitri Giunchi, Mohamed El Bekkay, Widade Oubrou, Mohammed Znari, Mohamed Aourir","doi":"10.2989/00306525.2023.2266774","DOIUrl":"https://doi.org/10.2989/00306525.2023.2266774","url":null,"abstract":"AbstractThis study presents the first data on the breeding ecology of the Cream-coloured Courser Cursorius cursor (family Glareolidae) in a grazed semi-arid steppe in southwestern Morocco. The egg-laying occurred between early May and July, with most nests found between May and June. The observed mean clutch size (1.86 ± 0.36 SD, n = 21 nests) and mean egg volume (11.59 ± 1.03 cm3, n = 39 eggs) were comparable to those recorded in the subspecies C. c. exsul in Cape Verde. Nest survival recorded over the whole incubation period was relatively high.Écologie de la reproduction du Courvite isabelle Cursorius cursor dans les pâturages semiarides du Parc National de Souss-Massa, sud-ouest du MarocCette étude présente les premières données sur l’écologie de la reproduction du Courvite isabelle Cursorius cursor dans une steppe pâturée du sud-ouest du Maroc. La ponte a eu lieu entre début mai et juillet, la plupart des nids ayant été trouvés entre mai et juin. La taille moyenne observée des pontes (1.86 ± 0.36 SD, n = 21 nids) et l’indice de volume moyen des oeufs (11.59 ± 1.03 cm3, n = 39 oeufs) étaient comparables à ceux enregistrés chez C. c. exsul au Cap-Vert. La survie des nids enregistrée sur l’ensemble de la période d’incubation était relativement élevée.Keywords: CharadriiformesCursorius spnestsNorth Africasteppewader","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":"7 23","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135391082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-term trends from Citizen Scientists: 24 years of breeding success data of African Oystercatchers <i>Haematopus moquini</i> in the Garden Route","authors":"B Arendse, P Dawson, B Mels, M Brown","doi":"10.2989/00306525.2023.2272047","DOIUrl":"https://doi.org/10.2989/00306525.2023.2272047","url":null,"abstract":"AbstractLong-term data on breeding success in beach-nesting birds in southern Africa are scarce. Citizen science projects have risen to the forefront of large dataset collection efforts globally, with several local projects helping us unpack long-term trends for species in southern Africa. A long-term monitoring project on African Oystercatcher Haematopus moquini breeding success in parts of the Garden Route on the south coast, conducted by the Lakes Bird Club, enables us to determine whether conservation efforts are positively influencing the species there. Since the onset of the study in 1997/1998, there has been a steady increase in the number of breeding pairs at Knysna and Sedgefield, but not at Brenton-on-Sea. A similar increase in hatching success is recorded, with an overall increase in the number of fledglings per adult pair over the area throughout the study. Collectively, this indicates that some local and national conservation efforts, such as the beach driving ban and awareness campaigns like #ShareTheShores, have been successful, leading to positive trends in these parameters for this species. This article highlights the usefulness of long-term datasets for corroborating outcomes from other large datasets, like the Southern African Bird Atlas Project 2.Études à long terme grâce aux citoyens scientifiques: 24 ans de données sur le succès de la reproduction de l’Huîtrier de Moquin Haematopus moquini sur la Garden Route, Sud AfrikaLes ensembles de données à long-terme sur le succès de la reproduction des oiseaux se reproduisant sur les plages d’Afrique australe sont rares. Au niveau mondial, les projets de science citoyenne se sont hissés au premier plan de la collecte de données à grande échelle, avec plusieurs projets locaux permettant identifier les tendances à long terme pour des espèces d’Afrique australe. Un projet de suivi à long terme du succès de la reproduction de l’Huîtrier de Moquin Haematopus moquini dans certaines parties de la Garden Route, mené par le Lakes Bird Club, nous permet de déterminer si les efforts de conservation ont une influence positive sur l’espèce. Depuis le début de l’étude en 1997/1998, il y a eu une augmentation constante du nombre de couples reproducteurs à Knysna et Sedgefield, mais pas à Brenton-on-Sea. Une augmentation similaire du taux d’éclosion et du succès de la reproduction est enregistrée, avec une augmentation globale du nombre de jeunes par couple au cours de la période de l’étude. Collectivement, cela indique que les efforts de conservation locaux et nationaux, tels que l’interdiction de conduire sur les plages et les campagnes de sensibilisation comme #ShareTheShores, ont bien succédé, conduisant à des tendances positives dans ces paramètres de la reproduction de l’espèce. Cet article souligne l’utilité des ensembles de données à long terme pour corroborer les résultats d’autres ensembles de données, comme le Southern African Bird Atlas Project 2.Keywords: breeding pairsBrenton-on-Seacoa","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":"75 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135868163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gill Memorial Medal citation: Colleen Downs","authors":"Alan TK Lee, Sandi Willows-Munro, David A Ehlers Smith, Preshnee Singh","doi":"10.2989/00306525.2023.2277511","DOIUrl":"https://doi.org/10.2989/00306525.2023.2277511","url":null,"abstract":"\"Gill Memorial Medal citation: Colleen Downs.\" Ostrich, ahead-of-print(ahead-of-print), pp. 1–2","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":"20 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135819370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anton Reichenow and the birds of Africa","authors":"Adrian JFK Craig","doi":"10.2989/00306525.2023.2263165","DOIUrl":"https://doi.org/10.2989/00306525.2023.2263165","url":null,"abstract":"AbstractThe first handbook of the birds of Africa was completed in 1905 by Anton Reichenow (1847–1941). Based in the Berlin museum for almost 50 years, he described 152 African taxa that are still recognised as valid species today, and was considered by his contemporaries as a key figure in the development of African ornithology.Anton Reichenow et les oiseaux d’AfriqueLe premier manuel sur les oiseaux d’Afrique a été achevé en 1905 par Anton Reichenow (1847–1941). Installé au musée de Berlin pendant près de 50 ans, il a décrit 152 taxons africains encore reconnus comme espèces, et a été considéré par ses contemporains comme une figure clé dans le développement de l’ornithologie africaine.Keywords: Afrotropical birdsbird collectorshistory of ornithologymuseum collectionsornithologiststaxonomy","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":" 39","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135863999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A demonstration of the value of recapture data for informing moult phenology models for avian species with imperfect moult data","authors":"Philipp H Boersch-Supan, Alan Tristram Kenneth Lee, Hans-Dieter Oschadleus","doi":"10.2989/00306525.2023.2248396","DOIUrl":"https://doi.org/10.2989/00306525.2023.2248396","url":null,"abstract":"AbstractThe Underhill–Zucchini model has revolutionised the study of moult in the context of birds’ annual cycles, but, as for all statistical models, inferences are vulnerable to violations of model assumptions. In particular, the standard Underhill–Zucchini models for moult phenology are vulnerable to imperfect moult data arising, for example, from non-random sampling and/or the misclassification of non-moulting birds. Similarly, inference is challenging for species with dispersed moult periods (population-level moult extending beyond an annual cycle). Using ringing data from Cape Weavers Ploceus capensis and SAFRING data for Cape Sugarbirds Promerops cafer, we demonstrate how recent extensions to the Underhill–Zucchini framework can help the robust estimation of moult parameters in such situations, in particular when within-season recapture data is available.Une démonstration de la valeur des données de recapture pour informer les modèles de phénologie de la mue pour les espèces avec des données de mue imparfaitesLes modèles Underhill–Zucchini ont révolutionné l’étude de la mue dans le contexte des cycles annuels des oiseaux, mais comme pour tous les modèles statistiques, les déductions sont vulnérables aux violations des présupposés du modèle. En particulier, les modèles Underhill–Zucchini pour la phénologie de la mue sont vulnérables aux données imparfaites sur la mue provenant, par exemple, d’un échantillonnage non aléatoire et/ou d’une classification erronée des oiseaux qui ne sont pas en mue. De même, l’inférence est difficile pour les espèces dont les périodes de mue sont dispersées (la mue au niveau de la population s’étendant au-delà d’un cycle annuel). En utilisant les données de baguage des tisserins du Cap Ploceus capensis et les données SAFRING pour les promérops du Cap Promerops cafer, nous démontrons comment les extensions récentes de l’approche Underhill– Zucchini peuvent aider à l’estimation robuste des paramètres de mue dans de telles situations, en particulier lorsque des données de recapture au cours de la saison sont disponibles.Keywords: bird-ringingfeather wearmoult durationPloceus capensisPromerops caferproportion feather mass grownseasonalityUnderhill–Zucchini model","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":"48 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135863039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}