Ornis Svecica最新文献_第3页

Invandringsförloppet hos vitstjärnig blåhake Luscinia svecica cyanecula på svenska västkusten 瑞典西海岸白星蓝鲨的迁徙过程

Ornis Svecica Pub Date : 2022-02-01 DOI: 10.34080/os.v32.23429

Reino Andersson

引用次数: 0

On the wing 在机翼上

Ornis Svecica Pub Date : 2022-02-01 DOI: 10.34080/os.v32.23825

J. Waldenström, Martin Stervander

引用次数: 0

Black Stork Back: Species distribution model predictions of potential habitats for Black Stork Ciconia nigra in Sweden 黑鹳背部:瑞典黑鹳潜在栖息地的物种分布模型预测

Ornis Svecica Pub Date : 2022-02-01 DOI: 10.34080/os.v32.22081

C. Thulin, Malin Sörhammar, J. Bohlin

{"title":"Black Stork Back: Species distribution model predictions of potential habitats for Black Stork Ciconia nigra in Sweden","authors":"C. Thulin, Malin Sörhammar, J. Bohlin","doi":"10.34080/os.v32.22081","DOIUrl":"https://doi.org/10.34080/os.v32.22081","url":null,"abstract":"Increased understanding of the need to save endangered and locally extinct species has led to restoration or preservation of populations through reintroductions. Reintroduction of a species is worthwhile if the prerequisites for existence at the historical location have improved. Thus, background information about the habitat requirements of a target species is important for introduction programmes to be successful. The Black Stork Ciconia nigra was lost as a breeding species in Sweden during the 20th century, but recent observations and reports of potential breeding indicate that habitat conditions for Black Stork in Sweden may have improved. In this study, we used species characteristics and references to identify habitats in Sweden suitable for potential reintroduction of Black Stork. We identified several suitable areas in the former distribution range of this species in southern Sweden. Seven Swedish counties contained more than 18 % suitable habitat within their total area, with highest proportions in Jönköping County (25.8 %), Blekinge County (23.9 %), Västra Götaland County (22.1 %) and Kronoberg County (20.7 %). We suggest these areas to be made the primary targets for Black Stork reintroduction in Sweden.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45312884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diet of sympatric Barn Owls Tyto alba and Short-eared Owls Asio flammeus in an agricultural landscape in south-east Spain 西班牙东南部农业景观中同域仓鸮Tyto alba和短耳猫头鹰Asio flammeus的饮食

Ornis Svecica Pub Date : 2021-12-21 DOI: 10.34080/os.v31.23108

Pablo Jiménez-Nájar, Jorge Garrido-Bautista, R. Tarifa, J. Rivas, G. Moreno-Rueda

{"title":"Diet of sympatric Barn Owls Tyto alba and Short-eared Owls Asio flammeus in an agricultural landscape in south-east Spain","authors":"Pablo Jiménez-Nájar, Jorge Garrido-Bautista, R. Tarifa, J. Rivas, G. Moreno-Rueda","doi":"10.34080/os.v31.23108","DOIUrl":"https://doi.org/10.34080/os.v31.23108","url":null,"abstract":"The diets of the Barn Owl Tyto alba and the Short-eared Owl Asio flammeus have been extensively studied worldwide over the past few years, especially on the Iberian Peninsula. Nevertheless, very few studies have examined the diets and the trophic niche overlap in areas where these two raptor species occur in sympatry. As such, in this study we compared the diets of the Barn Owl and the Short-eared Owl inhabiting agricultural landscapes of the Vega de Granada, south-east Spain, based on pellet analysis. The diets were very similar, as both owls preyed mainly on small mammals, the Algerian Mouse Mus spretus being the prey most commonly found in pellets from both species. Although the diet of the Barn Owl was more diverse than that of the Short-eared Owl, the food niche overlap was very high, thus indicating a low interspecific trophic segregation. Despite the similarities between both diets, the frequency of the Mediterranean Pine Vole Microtus duodecimcostatus was much higher in pellets from the Barn Owl, thus suggesting that the Barn Owl may exert pest control in years when the Mediterranean Pine Vole occurs in high numbers.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44778518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Use of foster parents in species conservation may cause conflicting objectives: hybridization between Lesser White-fronted Goose Anser erythropus and Barnacle Goose Branta leucopsis 在物种保护中使用养父母可能会导致目标冲突:小白额鹅Anser erythropus和Barnacle Goose Branta leucopsis之间的杂交

Ornis Svecica Pub Date : 2021-10-19 DOI: 10.34080/os.v31.22430

Niklas Liljebäck, K. Koffijberg, Christine Kowallik, J. Månsson, Å. Andersson

{"title":"Use of foster parents in species conservation may cause conflicting objectives: hybridization between Lesser White-fronted Goose Anser erythropus and Barnacle Goose Branta leucopsis","authors":"Niklas Liljebäck, K. Koffijberg, Christine Kowallik, J. Månsson, Å. Andersson","doi":"10.34080/os.v31.22430","DOIUrl":"https://doi.org/10.34080/os.v31.22430","url":null,"abstract":"Following the use\u0000 \u0000 of Barnacle Geese Branta leucopsis as foster parents in a conservation program for the endangered Lesser White-fronted Goose Anser erythropus in Sweden 1981–1999, mixed breeding pairs of the two species were established in the wild. We find indications that this was related to shared moulting habits of the two species in the Bothnian Sea during late 1990s. Starting in 2003, five mixed pairs produced at least 49 free-flying hybrid offspring until 2013, when the last breeding was confirmed. Reported numbers of hybrids did not increase in parallel to the production of young hybrids over time. After 2013, the number of hybrids started to decrease in Sweden and the Netherlands. Lower numbers of hybrids than expected can partly be explained by management actions taken, but may also be associated with low survival due to genetic outbreeding. Mixed pairs and their offspring entirely adopted the migratory habits of Barnacle Geese, overlapping very little with sites used by Lesser White-fronted Geese. We find no evidence that the hybrids ever posed a serious threat to Lesser White-fronted Geese breeding in Fennoscandia. ","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44351284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Recension av ”Fugleatlas: de danske ynglefugles udbredelse 2014–2017” (Vikstrøm T & Moshøj CM, redaktörer, 2020)

Ornis Svecica Pub Date : 2021-10-08 DOI: 10.34080/os.v31.23538

Jonas Waldenström

引用次数: 0

Diet of the introduced Gough Moorhen Gallinula comeri on Tristan da Cunha 特里斯坦-达库尼亚岛引种的白头翁的饮食

Ornis Svecica Pub Date : 2021-09-13 DOI: 10.34080/os.v31.23476

A. Bond, G. McClelland

引用次数: 1

Densities of the Eurasian Threetoed Woodpecker Picoides tridactylus calculated from sap row surveys are on par with estimates from fixed route bird censusing 根据树液行调查计算出的欧亚三趾啄木鸟的密度与固定路线鸟类普查的估计值相当

Ornis Svecica Pub Date : 2021-09-10 DOI: 10.34080/os.v31.22416

Björn Ferry, J. Ekenstedt, Martin Green

{"title":"Densities of the Eurasian Threetoed Woodpecker Picoides tridactylus calculated from sap row surveys are on par with estimates from fixed route bird censusing","authors":"Björn Ferry, J. Ekenstedt, Martin Green","doi":"10.34080/os.v31.22416","DOIUrl":"https://doi.org/10.34080/os.v31.22416","url":null,"abstract":"Species-specific tracks animals can be an effective way of mapping species that are hard to find even if they are present. We used observations of sap rows on trees to calculate densities of Eurasian Three-toed Woodpeckers Picoides tridactylus. We surveyed 14 fixed routes in northern Sweden below the montane forest for sap rows during the autumn of 2020. We used our observations of fresh sap rows together with average home range and proportion of active territories per year derived from the literature, to calculate large-scale woodpecker population density. The density based on sap rows was 0.19 pairs per km2. Densities from fixed route bird observations for different parts of Västerbotten County below the montane forests were 0.13–0.14 pairs per km2, in relative agreement with the estimates from sap rows. We also calculated the population density from fixed route observations in the montane forests, and these were almost three times higher. Our density calculations correspond to 7,900 pairs in Västerbotten County. These results indicate that systematic counts of sap rows can quickly provide credible population density estimates of Eurasian Three-toed Woodpeckers.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43962718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Seasonal changes in body size and mass of Red Knots Calidris canutus during autumn migration through southern Baltic 在波罗的海南部的秋季迁徙中，红结的体型和数量的季节变化

Ornis Svecica Pub Date : 2021-03-05 DOI: 10.34080/os.v15.22744

W. Meissner, Piotr Kamont

{"title":"Seasonal changes in body size and mass of Red Knots Calidris canutus during autumn migration through southern Baltic","authors":"W. Meissner, Piotr Kamont","doi":"10.34080/os.v15.22744","DOIUrl":"https://doi.org/10.34080/os.v15.22744","url":null,"abstract":"Body size and mass of 1,458 juvenile and 558 adult Knots were measured during autumn migration in Puck Bay, Poland, between 1983 and 1999. The measurements fit well with those gathered along the migration route of Siberian Knots Calidris c. canutus. All linear measurements of adults, except body mass adjusted for size, were significantly higher than those of juveniles. Shorter wing in juveniles than in adults seems to be a general rule regardless of geographical region. Adult females migrated ahead of males, confirmed by decreasing mean measurements. Juveniles carried larger relative energy stores than adults. Puck Bay may be an emergency feeding place for adult Knots, whereas juveniles may use it as one of many stop-over sites. Juveniles were significantly smaller, but had higher adjusted body mass, in late September than earlier, indicating a behavioural difference between late and early birds during preceding stages of migration. Late juveniles probably follow a time-minimising strategy with larger fuel stores and fewer stop-over sites, whereas birds passing in August migrate with very small energetic reserves, making only short flights and stops.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47331119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Behaviour of Black-throated Diver Gavia arctica and Red-throated Diver Gavia stellata during autumn migration stopover 黑喉蛙和红喉蛙在秋季迁徙中途停留期间的行为

Ornis Svecica Pub Date : 2021-02-28 DOI: 10.34080/os.v17.22691

M. Polak, M. Ciach

引用次数: 2