Ornis Svecica 2020-01-21T14:53:46+01:00 Martin Stervander Open Journal Systems <p><strong>Ornis Svecica</strong> is an online scientific journal issued by BirdLife Sweden. All contributions are published as open access, available to anyone, and with no publication fee for the authors. The aims and scope of the journal are to provide a forum for full-length or short original research reports, including descriptive ones, and reviews, communications, debate, and letters concerning all fields of ornithology. Ornis Svecica publishes contributions irrespective of the geographic origin of authors and subject, and we welcome submissions not only from professional researchers but from laymen as well. We assume a particular responsibility to offer a process and a forum for the latter, and encourage their submission of results and ideas. The journal language will be English or Swedish with a comprehensive summary in the other language (assistance is offered to authors with insufficient knowledge in the language for the summary).</p> Ornis Svecica fledges into the modern publishing landscape 2020-01-21T14:53:45+01:00 Martin Stervander Sören Svensson 2019-05-11T00:00:00+02:00 ##submission.copyrightStatement## Breeding prerequisites for Ortolan Bunting Emberiza hortulana in Swedish farmland with special focus on foraging 2020-01-21T14:53:46+01:00 Jan Sondell Carles Durà Magnus Persson <p>Ortolan Buntings <em>Emberiza hortulana</em>&nbsp;are rapidly decreasing in Sweden. Changes in agricultural practices are the main reason. Landscape simplification due to the removal of semi-natural elements leads to a lack of breeding habitats. Furthermore, due to intensive artificial fertiliser applications and advanced agricultural equipment and technology, crops grow both taller and denser than 50 years ago. In Kvismaren, south central Sweden, Ortolan Buntings have been studied since 2009. Here, we focus on one question: what defines a good foraging microhabitat? In 2017, nesting areas for five females and four males were identified and we did 271 feeding observations. Average foraging distance at different nests varied between 47 and 114 meters. About 70% of the foraging activities took place within crop fields. Ortolans utilized mainly unsown rows, later to be used by tractors for spraying etc. and patchy parts of standing crops. Invertebrates extracted from those areas looked dark, suggestive of ground-dwelling species. Our key management recommendation to create better microhabitats for feeding can be easily achieved by most farmers: to leave two unsown sowing rows (amounting to 0.38 m in width) for each tractor wheel to follow.</p> 2019-05-11T00:00:00+02:00 ##submission.copyrightStatement## Population development of European Stonechat Saxicola rubicola during the initial phase of its expansion in Western Sweden 2020-01-21T14:53:45+01:00 Reino Andersson <p>With its 25 confirmed breeding records between 2000 and 2015, the European Stonechat <em>Saxicola rubicola</em> is historically a rare bird in Sweden. The first breeding in the West Coast was found in 2014. Censuses performed in 2017 and 2018 revealed 28 and 30 breedings respectively. Out of 83 investigated territories, most were found in coastal heathlands in Halland. The arrival occurred in the turn of the months March/April and the majority of the males consisted of one year old birds (2cy). Fledgling date for 68 clutches were distributed from May to August. Second clutches were observed for ten out of 32 investigated breedings. The Swedish expansion should be seen in the context of Danish immigration in combination with a large-scale advance via the German Schleswig-Holstein area. The European Stonechat belongs to those range-expanding species that are expected to increase according to predictions of the future bird fauna. Due to warmer climate, plenty of appropriate habitats and high probability of reproduction, the conditions are good for a continued range expansion in southern Sweden.</p> 2019-05-11T00:00:00+02:00 ##submission.copyrightStatement## Collision with power lines and electrocutions in birds — an analysis based on Swedish ringing recoveries 1990–2017 2020-01-21T14:53:44+01:00 Thord Fransson Lina Jansson Tuomo Kolehmainen Thomas Wenninger <p>Recoveries of birds ringed in Sweden from the period 1990–2017 were used to analyse the occurrence of collisions with power lines and electrocutions. Out of more than 10,000 recoveries of birds found dead with finding circumstances mentioned, 8.6% was associated with power line constructions. The number of species involved was 51 and high proportions were especially evident in some species of owls and raptors. The overall proportion of recoveries caused by collision / electrocution shows a significant decrease over time. A decrease over time in the proportions of electrocution and collision was also evident when analysing finding circumstances in four species where corpses were sent to the Swedish Museum of Natural History. Information about the power line system in Sweden during the period 2007–2016 shows that the length of local power lines has decreased with about 21% during a ten-year period and that underground cables have increased with 28% during the same period. The results show that collisions with power lines have decreased more than electrocutions and this may imply that there are still many places where birds are at risk of being electrocuted.</p> 2019-07-10T00:00:00+02:00 ##submission.copyrightStatement## Return rates of nest-box breeding Pied Flycatchers Ficedula hypoleuca to their breeding site in subalpine birch forest in Swedish Lapland, during 1965–2018 2019-12-11T20:01:10+01:00 N Erik I Nyholm <p>Return rates of 4,178 female and 1,565 male breeding Pied Flycatchers ringed in 1965–2017 were studied near the species’ upper elevation and climatic limit in northern Sweden. Female return rate was 7.5% in the season subsequent to the first breeding season. Having returned once, 37% continued to return the next three seasons. Corresponding return rates of males were 27% and 39%. Female return rate decreased with more than 30% during the study period whereas that of males did not decrease. This difference was probably due to increased mortality during the non-breeding season that selectively struck females after the 1970s. Local factors affected return rates in both sexes. Return rate was positively correlated with breeding success in females but negatively in males, whereas it was correlated with nest-predation in the opposite way. Predation by mustelids accounted for a significant part of female return rate. Females that had returned once were continuously faithful to the former breeding site. Males showed faithfulness only after having returned twice.</p> 2019-10-31T00:00:00+01:00 ##submission.copyrightStatement## Plumage variation of males in Scandinavian populations of European Stonechat Saxicola rubicola 2020-01-21T14:53:42+01:00 Reino Andersson <p>In western Europe, the European Stonechat <em>Saxicola rubicola</em>, occurs in two subspecies; <em>rubicola</em>, with a large distribution in Europe, and <em>hibernans</em>, mainly distributed on the British Isles. A small population of presumed <em>hibernans</em> birds breed in Norway. However, difficulties in distinguishing <em>hibernans</em> from <em>rubicola</em> at an individual level has led to speculation regarding the origin of the Norwegian birds. There are no clear genetic differences between the subspecies and their plumage appearance can be considered to overlap within parts of the range. To investigate this, I studied the plumage variation among males during the breeding season in the Scandinavian populations of European Stonechats in Sweden, Norway and Denmark. The study is based on photos of 404 males during the period March–May. The presence or absence of six typical <em>hibernans</em> characteristics were registered for each individual. The results show that males with both <em>hibernans</em> and <em>rubicola</em> characteristics occur during the spring in the Scandinavian populations. There was a clear over-representation of males with <em>hibernans</em> characteristics in Norway as compared to Sweden, and to a lower degree also to Denmark. If the expansion of <em>rubicola</em> progresses in Scandinavia, one could expect a larger proportion of <em>rubicola</em>-like males in the Norwegian population.</p> 2019-12-11T00:00:00+01:00 ##submission.copyrightStatement## Nesting of Eurasian Tree Sparrow Passer montanus in a nest of Red Kite Milvus milvus 2019-12-11T20:01:10+01:00 Klaudia Litwiniak Marcin Przymencki <p>In June 2019 we found a nest of Eurasian Tree Sparrow <em>Passer montanus</em> in a nest of Red Kite <em>Milvus milvus</em>. It contained five chicks and was located on the side of the kite nest. The nests were located 17&nbsp;m above ground in a pine tree in a small pine woodland within farmland in western Poland. We believe that this is the first record of Eurasian Tree Sparrow breeding in a Red Kite nest. Our observation supports the notion of great adaptability and flexibility in selection of nest site reported by other authors, who have found Eurasian Tree Sparrow nest in large twig nests of several species.</p> 2019-11-12T00:00:00+01:00 ##submission.copyrightStatement## Mew Gull Larus canus breeding in a residential area of Malmö, Sweden 2019-12-11T20:01:10+01:00 César Lautaro Chávez Villavicencio María Fernanda Márquez Bahamonde <p>The Mew Gull <em>Larus canus</em> is both a coastal and inland breeder and can be found on many different substrates, including man-made structures. It is known since long to nest in urban areas of Sweden, but neither the number of urban breeding pairs nor their behaviour have been well documented. We made some observations of breeding Mew Gulls in the city of Malmö in south Sweden and asked the chair of the tenant owners’ association that comprised one of the buildings with Mew Gull nest about the tenants’ experience of the species. Some perceive Mew Gulls as harmful because they dirty the roofs, leave a bad smell, are noisy, and defend their young with aggressive behaviours.&nbsp;Given the often-conflicting interests of gulls and humans, a better documentation of the nesting population in urban areas of Sweden, as well as their behaviour and interaction with people, is called for.</p> 2019-11-12T00:00:00+01:00 ##submission.copyrightStatement##