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Breeding ecology of the Cream-coloured Courser Cursorius cursor (Glareolidae) on semi-arid grazing land in Souss-Massa National Park, southwestern Morocco 摩洛哥西南部Souss-Massa国家公园半干旱草地上的奶油色游隼(Glareolidae)的繁殖生态学
4区 生物学
Ostrich Pub Date : 2023-11-08 DOI: 10.2989/00306525.2023.2266774
Yassine Teyar, Dimitri Giunchi, Mohamed El Bekkay, Widade Oubrou, Mohammed Znari, Mohamed Aourir
{"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":null,"pages":null},"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}
引用次数: 0
Long-term trends from Citizen Scientists: 24 years of breeding success data of African Oystercatchers Haematopus moquini in the Garden Route 来自公民科学家的长期趋势:花园路线上24年非洲捕牡蛎者摩库尼Haematopus moquini的繁殖成功数据
4区 生物学
Ostrich Pub Date : 2023-11-03 DOI: 10.2989/00306525.2023.2272047
B Arendse, P Dawson, B Mels, M Brown
{"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":null,"pages":null},"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}
引用次数: 0
Gill Memorial Medal citation: Colleen Downs 吉尔纪念奖章:科琳·唐斯
4区 生物学
Ostrich Pub Date : 2023-11-03 DOI: 10.2989/00306525.2023.2277511
Alan TK Lee, Sandi Willows-Munro, David A Ehlers Smith, Preshnee Singh
{"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":null,"pages":null},"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}
引用次数: 0
Anton Reichenow and the birds of Africa Anton Reichenow和非洲的鸟类
4区 生物学
Ostrich Pub Date : 2023-10-31 DOI: 10.2989/00306525.2023.2263165
Adrian JFK Craig
{"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":null,"pages":null},"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}
引用次数: 0
A demonstration of the value of recapture data for informing moult phenology models for avian species with imperfect moult data 再捕获数据对不完善的鸟类物种的换羽物候模型的价值论证
4区 生物学
Ostrich Pub Date : 2023-10-31 DOI: 10.2989/00306525.2023.2248396
Philipp H Boersch-Supan, Alan Tristram Kenneth Lee, Hans-Dieter Oschadleus
{"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":null,"pages":null},"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}
引用次数: 0
101 Curious Tales of East African Birds: A Brief Introduction to Tropical Ornithology101 Curious Tales of East African Birds: A Brief Introduction to Tropical Ornithology, Author: C Beale, 2023, London: Pelagic Publishing, Paperback GBP 25.00, ebook GBP 20.00, ISBN 9781784272913, 222 pp, https://pelagicpublishing.com/products/101-curious-tales-of-east-african-birds 101东非鸟类奇谈:热带鸟类学简介101东非鸟类奇谈:热带鸟类学简介,作者:C Beale, 2023,伦敦:Pelagic出版社,平装本25.00英镑,电子书20.00英镑,ISBN 9781784272913, 222页,https://pelagicpublishing.com/products/101-curious-tales-of-east-african-birds
4区 生物学
Ostrich Pub Date : 2023-10-27 DOI: 10.2989/00306525.2023.2274725
H Dieter Oschadleus
{"title":"101 Curious Tales of East African Birds: A Brief Introduction to Tropical Ornithology101 Curious Tales of East African Birds: A Brief Introduction to Tropical Ornithology, Author: C Beale, 2023, London: Pelagic Publishing, Paperback GBP 25.00, ebook GBP 20.00, ISBN 9781784272913, 222 pp, https://pelagicpublishing.com/products/101-curious-tales-of-east-african-birds","authors":"H Dieter Oschadleus","doi":"10.2989/00306525.2023.2274725","DOIUrl":"https://doi.org/10.2989/00306525.2023.2274725","url":null,"abstract":"","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136318626","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}
引用次数: 0
Avian species assemblages in African mangrove forests 非洲红树林中的鸟类物种组合
4区 生物学
Ostrich Pub Date : 2023-10-20 DOI: 10.2989/00306525.2023.2263171
W Richard J Dean, Suzanne Milton
{"title":"Avian species assemblages in African mangrove forests","authors":"W Richard J Dean, Suzanne Milton","doi":"10.2989/00306525.2023.2263171","DOIUrl":"https://doi.org/10.2989/00306525.2023.2263171","url":null,"abstract":"AbstractAfrican mangrove forests are threatened by harvesting and climate change. Most bird species that occur in this habitat are either drawn from adjacent forests or woodlands or are marine and piscivorous species. Bird communities of East and southern African mangroves, along the coast from the northern shores of the Red Sea to the Mngazana Estuary in South Africa, are known mainly from a few vegetation studies. Mangrove bird communities in West and Central Africa are better studied, and are listed in this review, together with notes on habitat use within the mangroves. No African bird species are restricted to mangroves, but four species are strongly associated with mangroves in West and Central Africa. These mangrove forests also provide space for migrant warblers (of families Acrocephalidae, Phylloscopidae and Sylviidae), possibly because they lack similar-sized species that are resident in other African forest types. Although African mangroves appear to lack a distinctive avifauna, their possible values as foraging sites for resident coastal and forest birds and as refugia for migrating warblers remain to be documented.Assemblages d’espèces d’oiseaux dans les forêts de mangrove africainesLes forêts de mangroves africaines sont menacées par l’exploitation et le changement climatique. La plupart des espèces d’oiseaux présentes dans cet habitat proviennent des forêts ou des zones boisées adjacentes ou sont des espèces marines et piscivores. Les communautés d’oiseaux des mangroves d’Afrique de l’Est et d’Afrique australe, le long de la côte, depuis les rives septentrionales de la mer Rouge jusqu’à l’estuaire de Mngazana en Afrique du Sud, sont connues principalement grâce à quelques études sur la végétation. Les communautés d’oiseaux des mangroves d’Afrique de l’Ouest et d’Afrique centrale sont mieux étudiées et sont répertoriées dans cette étude, avec des notes sur l’utilisation de l’habitat dans les mangroves. Aucune espèce d’oiseau africain ne se limite aux mangroves, mais quatre espèces sont fortement associées aux mangroves d’Afrique de l’Ouest et d’Afrique centrale. Ces forêts de mangroves offrent également de l’espace aux fauvettes migratrices (Acrocephalidae, Phylloscopidae, Sylviidae), peut-être parce qu’elles manquent d’espèces de taille similaire qui sont présentes dans d’autres types de forêts africaines. Bien que les mangroves africaines semblent dépourvues d’une avifaune distincte, leur valeur éventuelle en tant que sites d’alimentation pour les oiseaux côtiers et forestiers résidents et en tant que refuges pour les fauvettes migratrices reste à documenter.Keywords: AcrocephalidaeAvicenniaLaguncularia racemosamigrant warblersPhylloscopidaeRhizophoraSylviidae","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135616931","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}
引用次数: 0
Primary moult in the annual cycle of adult African Oystercatchers Haematopus moquini 非洲成年捕牡蛎者的年周期中的初级换毛
4区 生物学
Ostrich Pub Date : 2023-10-20 DOI: 10.2989/00306525.2023.2250560
Taylyn C Bate, Peter G Ryan, Les G Underhill
{"title":"Primary moult in the annual cycle of adult African Oystercatchers <i>Haematopus moquini</i>","authors":"Taylyn C Bate, Peter G Ryan, Les G Underhill","doi":"10.2989/00306525.2023.2250560","DOIUrl":"https://doi.org/10.2989/00306525.2023.2250560","url":null,"abstract":"AbstractAfrican Oystercatchers Haematopus moquini are sedentary, intertidal foraging birds, range-restricted to Namibia and South Africa. Their annual cycle has two components: breeding and moult. The Underhill–Zucchini model estimated a primary moult duration of 154 days, and mean start and completion dates of 1 April and 2 September. Most eggs (90%) are laid between mid-November and mid-February; thus, on average, oystercatchers have 2–3 months between moult completion and egg laying. The completion date confirms an overlap between moult and the period of post-fledging dependence of juveniles on their parents. The 154-day primary moult duration spreads the energetic demands of feather production to cope with this overlap and with the fact that primary moult extends through winter when storms make intertidal areas inaccessible for days. There are approximately 50 quantitative studies of primary moult for migrant waders (suborder Charadrii); this is the third for a resident species. The other two species of migrant waders studied are in south-eastern Australia: the Hooded Dotterel Thinornis cucullatus and Sooty Oystercatcher Haematopus fuliginosus. The Hooded Dotterel has one of the longest estimated moult durations (203 days) and its moult and breeding overlap. The annual schedules for the Sooty Oystercatcher and African Oystercatcher are similar, as is the estimated moult duration: 149 and 154 days, respectively. Preliminary studies of the primary moult of the Eurasian Oystercatcher H. ostralegus indicate the duration to be 100 days, which is two-thirds that of the two sedentary oystercatchers. This is likely a consequence of Eurasian Oystercatchers having migration and harsh winter conditions as additional components of their annual cycle, and thus a limited period for primary moult. This study was based largely on photographic records of African Oystercatchers in flight, with contributions by citizen scientists. We make two key conclusions: the need for more studies of the moult strategies of the Haematopidae and resident waders; and digital photography of free-ranging birds can be used to study primary moult.La mue primaire dans le cycle annuel de l’Huîtrier de Moquin Haematopus moquiniL’Huîtrier de Moquin Haematopus moquini est une espèce sédentaire qui s’alimente dans les zones intertidales et dont l’aire de répartition est limitée à la Namibie et à l’Afrique du Sud. Le calendrier annuel comporte deux composantes : la reproduction et la mue. Le modèle de mue Underhill–Zucchini a estimé la durée de la mue primaire à 154 jours, et les dates moyennes de début et de fin de la mue au 1er avril et au 2 septembre. La plupart des oeufs (90%) sont pondus entre mi-novembre et mi-février; ainsi, en moyenne, les huîtriers ont deux à trois mois entre la fin de la mue et la ponte. La date d’achèvement de la mue confirme un chevauchement entre la mue et la période de dépendance des juvéniles vis-à-vis de leurs parents après l’envol. La durée de 154 jours","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135570210","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}
引用次数: 0
Pattern and intensity of moult in White-capped/Shy Albatrosses Thalassarche steadi/cauta 白顶信天翁/害羞信天翁的换羽模式和强度
4区 生物学
Ostrich Pub Date : 2023-10-19 DOI: 10.2989/00306525.2023.2263169
Peter G Ryan, Oluwadunsin E Adekola
{"title":"Pattern and intensity of moult in White-capped/Shy Albatrosses <i>Thalassarche steadi/cauta</i>","authors":"Peter G Ryan, Oluwadunsin E Adekola","doi":"10.2989/00306525.2023.2263169","DOIUrl":"https://doi.org/10.2989/00306525.2023.2263169","url":null,"abstract":"AbstractAlbatrosses typically only replace a subset of flight feathers each annual moult cycle. We scored the moult of 662 White-capped/Shy Albatrosses Thalassarche steadi/cauta, using birds that had been killed by longline fisheries off South Africa. Most adults and immatures alternated replacing the outer primaries (phase 1) and inner primaries (phase 2), but there was considerable variation among adults, with 0–10 primaries replaced each moult cycle. Birds in phase 1 moult replaced fewer primaries than birds in phase 2, but the proportion by mass was similar. Adults replaced more primaries than immatures as there was a disproportionate number of adults in phase 2 moult (82%), which might indicate that most adults off South Africa are in their first year after a successful breeding attempt, but a similar bias occurred among beached birds from New Zealand and Australia. The outer primaries were usually replaced outwards from P8, but the replacement sequence was more variable among the inner primaries. Secondary moult overlapped with primary moult, but not all secondaries were moulted each year. Adults had more active moult centres and replaced more secondaries at once than immatures. Tail moult started after primary moult, with 1–11 feathers growing from 1–6 active centres. Some birds replaced their rectrices in pairs, with often 2 or 3 pairs moulting at once, but others replaced alternate feathers or almost all rectrices at once. A few birds exhibited intense wing moult, but the norm was to replace only 1 or 2 primaries and 1–6 secondaries at once. Age- and sex-related differences in moult intensity presumably result from different time constraints. Adult White-capped/Shy Albatrosses take a year off between successful breeding attempts, allowing time for a more protracted moult. However, we cannot explain the intense moult in some immatures. Our findings support recent studies showing that albatross flight feather moult patterns are more varied than previously reported.Schéma et intensité de la mue chez l’Albatros à cape blanche Thalassarche steadi/cautaLes albatros ne remplacent généralement qu’un sous-ensemble de plumes de vol à chaque cycle de mue annuel. Nous avons évalué la mue de 662 Albatros à cape blanche Thalassarche steadi/cauta tués par la pêche à la palangre au large de l’Afrique du Sud. La plupart des adultes et des immatures remplaçaient alternativement les primaires externes (phase 1) et internes (phase 2), mais il y avait une variation considérable parmi les adultes, avec 0–10 primaires remplacées à chaque cycle de mue. Les oiseaux en phase 1 de la mue remplacent moins de primaires que les oiseaux en phase 2, mais la proportion en masse est similaire. Les adultes ont remplacé plus de primaires que les immatures en raison d’un nombre disproportionné d’adultes en phase 2 de la mue (82%), ce qui pourrait indiquer que la plupart des adultes au large de l’Afrique du Sud sont dans leur première année après une tentative de reproductio","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135778358","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}
引用次数: 0
Twenty-three new bird species for Angola, including Mayombe National Park in Cabinda Province, and other noteworthy records 安哥拉新增23种鸟类,包括卡宾达省的Mayombe国家公园,以及其他值得注意的记录
4区 生物学
Ostrich Pub Date : 2023-10-18 DOI: 10.2989/00306525.2023.2237686
Michael SL Mills, Rogério Ferreira, Pedro Vaz Pinto
{"title":"Twenty-three new bird species for Angola, including Mayombe National Park in Cabinda Province, and other noteworthy records","authors":"Michael SL Mills, Rogério Ferreira, Pedro Vaz Pinto","doi":"10.2989/00306525.2023.2237686","DOIUrl":"https://doi.org/10.2989/00306525.2023.2237686","url":null,"abstract":"AbstractThe avifauna of Cabinda Province, Angola, is poorly known; since 1885 only one ornithological expedition has been made to the province, by AA da Rosa Pinto in 1969. All previous works that include Cabinda, including those of Rosa Pinto, were confined to the coastal and central zones (Lower Mayombe), with the higher-altitude eastern zone (Upper Mayombe) completely unexplored. With access to Cabinda recently improved, we made four short field trips (in 18–21 March 2022, 15–17 June 2022, 23–27 September 2022, and 3–10 June 2023), focused mainly on the Upper Mayombe area, as part of an ongoing effort to make biological inventories for poorly known regions of Angola, which include Mayombe National Park. We recorded 256 bird species: 101, 139, 157 and 187 during Visits 1–4, respectively. Among these were 23 new species records for Angola, most of which were either sound recorded or photographed as evidence. A further 11 species were new to Cabinda but had previously been recorded elsewhere in Angola, and an additional 34 species had previously been recorded fewer than ten times from Angola. These records highlight the biological importance of Mayombe National Park and its significant contribution to the overall biodiversity of Angola.Vingt-trois nouvelles espèces d’oiseaux pour l’Angola, du parc national de Mayombe, Cabinda, et autres registres remarquablesL’avifaune de Cabinda est mal connue ; depuis 1885, une seule expédition ornithologique a été effectuée dans cette province d’Angola, par AA da Rosa Pinto en 1969. Tous les travaux antérieurs sur Cabinda, y compris ceux Rosa Pinto, se sont limités à la zone côtière et à la zone centrale (Bas Mayombe), la zone orientale de plus haute altitude (Haut Mayombe) n’ayant pas été explorée. L’accès à Cabinda ayant été récemment amélioré, nous avons effectué quatre courtes visites de terrain (18–21 mars 2022, 15–17 juin 2022, 23–27 septembre 2022 et 3–10 juin 2023) focalisées principalement sur la zone du Haut Mayombe, dans le cadre d’un effort continu pour réaliser des inventaires biologiques dans des régions mal connues de l’Angola, qui comprennent le Parc national du Mayombe. Nous avons inventarié 256 espèces d’oiseaux: 101, 139, 157 et 187 lors de chaque visite, respectivement. Parmi ces espèces, 23 étaient nouvelles pour l’Angola, la plupart d’entre elles ayant été enregistrées ou photographiées comme preuve. Onze autres espèces étaient nouvelles pour Cabinda mais avec des registres ailleurs en Angola, et 34 autres espèces avaient été répertoriés moins de dix fois en Angola. Ces registres soulignent l’importance biologique du parc national de Mayombe et sa contribution significative à la biodiversité globale de l’Angola.Vinte e três novas aves para Angola no Parque Nacional do Mayombe, Província de Cabinda, e outros registos notáveisA avifauna de Província de Cabinda é pouco conhecida; desde 1885 apenas uma expedição ornitológica—por AA da Rosa Pinto em 1969—tinha sido feita a esta província angol","PeriodicalId":54655,"journal":{"name":"Ostrich","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135884452","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}
引用次数: 0
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