Ostrich最新文献

{"title":"Influence of groups of points on estimates of the parameters of moult","authors":"Les G Underhill, Tanya Scott","doi":"10.2989/00306525.2023.2286594","DOIUrl":"https://doi.org/10.2989/00306525.2023.2286594","url":null,"abstract":"The Underhill–Zucchini model of avian moult is a statistical simplification for the analysis of primary moult, a complex biological system in birds. As with all such models, conclusions can be bias...","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138682940","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 changes in petrel populations on Inaccessible Island, Tristan da Cunha, inferred from the diet of Brown Skuas Stercorarius antarcticus","authors":"Peter G Ryan","doi":"10.2989/00306525.2023.2269479","DOIUrl":"https://doi.org/10.2989/00306525.2023.2269479","url":null,"abstract":"Petrels that breed in burrows and return to their colonies after dark are among the most poorly studied seabirds. Brown Skuas Stercorarius antarcticus (family Stercorariidae) are major predators of...","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138682867","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":"Special issue on moult in African birds","authors":"Adrian Craig, Birgit Erni","doi":"10.2989/00306525.2023.2289255","DOIUrl":"https://doi.org/10.2989/00306525.2023.2289255","url":null,"abstract":"Published in Ostrich: Journal of African Ornithology (Vol. 94, No. 4, 2023)","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138716095","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":"Using generalised additive models to visualise the annual cycle of primary feather moult patterns","authors":"Rebecca R Irons, Alan TK Lee, Robert L Thomson, Birgit Erni","doi":"10.2989/00306525.2023.2287165","DOIUrl":"https://doi.org/10.2989/00306525.2023.2287165","url":null,"abstract":"Moult is a vital but energy-demanding event in a bird's phenological cycle. Primary moult is the shedding of old feathers and the regeneration of new flight feathers to maintain efficient functioni...","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138683283","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":"Multiple circannual moult strategies: feather tract moult patterns for common birds of the central Fynbos region, South Africa","authors":"Alan TK Lee","doi":"10.2989/00306525.2023.2272051","DOIUrl":"https://doi.org/10.2989/00306525.2023.2272051","url":null,"abstract":"When and where birds lose their feathers during the annual moult cycle is a fascinating subject, but there is little reported on patterns and strategies of moult for most African bird species. Whil...","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138516173","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 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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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}