Ornis Svecica 2020-05-25T07:21:43+02:00 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 moulting into its new plumage 2020-01-25T19:16:19+01:00 Martin Stervander Jonas Waldenström <p class="zw-paragraph heading0" data-header="0" data-textformat="{&quot;fv&quot;:&quot;normal&quot;,&quot;td&quot;:&quot;none&quot;,&quot;cs&quot;:&quot;0pt&quot;,&quot;fw&quot;:&quot;none&quot;,&quot;fgc&quot;:&quot;rgb(0, 0, 0)&quot;,&quot;size&quot;:&quot;12.00&quot;,&quot;va&quot;:&quot;baseline&quot;,&quot;fw_i&quot;:400,&quot;type&quot;:&quot;text&quot;,&quot;fs&quot;:&quot;normal&quot;,&quot;bgc&quot;:&quot;rgba(0, 0, 0, 0)&quot;}" data-margin-bottom="0pt" data-hd-info="0" data-doc-id="756576000000132001" data-doc-type="writer">At the start of the new decade,&nbsp;<em>Ornis Svecia</em> is now entering its 30th year as an ornithological journal. It is a year of change for the journal, perhaps most evident in the transition that started last year with&nbsp;Ornis Svecicamoving from a printed journal to an online journal&nbsp;(Stervander &amp; Svensson 2019). Being digital is a necessary step in today’s publishing landscape and we are happy that we alongside this change also publish all papers as open access, making research available for everyone that is interested.&nbsp;Another major change is that Professor Sören Svensson is stepping down after 29 years as Editor-in-Chief. His role for&nbsp;<em>Ornis Svecica</em> – and indeed for BirdLife Sweden and Swedish ornithology at large – has been profound. During this time the field of ornithology has both widened and specialized. The toolbox of the modern ornithologist now includes molecular biology techniques, advanced miniaturized telemetry loggers, and large-scale weather radar data. But ornithology is still at heart based on careful observation of the natural world, through surveys, ringing and migration studies.&nbsp;<span data-doc-id="756576000000132001" data-doc-type="writer">The editorial board wishes to express heartfelt thanks to Sören, for his significant efforts.</span></p> 2020-01-25T00:00:00+01:00 Copyright (c) 2020 Martin Stervander, Jonas Waldenström The kleptoparasitic and commensal association of Dalmatian Pelicans Pelecanus crispus with Great Cormorants Phalacrocorax carbo 2020-01-25T19:16:47+01:00 Hans Källander <p><span lang="EN-GB">The association between Dalmatian Pelicans <em>Pelecanus crispus </em>and Great Cormorants <em>Phalacrocorax carbo</em>was studied at three Greek sites, Megali Prespa, Kerkini and Karla.&nbsp; At Prespa, the two species seemed to use each other mutually: pelicans benefited from fish that tried to escape from the cormorants by swimming towards the surface while cormorants used the pelicans as a cue to the presence of fish shoals. When a pelican flew towards a cormorant, other cormorants immediately flew there and dived instantly. The association usually was very brief lasting only a mean of circa 114 s. Pelicans mostly foraged singly or in small groups (mean 3.2 individuals) and often there were also few cormorants (median 6). Kleptoparasitism was recorded at all three sites, but at Kerkini and Karla, pelicans associated with the huge fishing flocks of cormorants and predominantly kleptoparasitized them. Around 20% of attacks were successful. Thirty-one attacks were very violent with the pelican holding the cormorant until it dropped its fish</span>.</p> 2020-01-25T00:00:00+01:00 Copyright (c) 2020 Hans Källander Increasing numbers of wintering forest birds in Swedish Lapland 1986–2017 show stronger correlations with forest development than with local weather 2020-04-19T01:43:07+02:00 Björn Ferry Håkan Rune Ulf Andersson Martin Green <p><strong>After a long </strong>period of decline, the number of forest birds has increased in Sweden in recent decades. Whether this trend is due to an increase in forested area, forest quality, climate change, or a combination of these factors, remains unclear. Here, we compared forest bird data from a local winter point count route around Storuman in Swedish Lapland between 1986 and 2017, with the development of regional forest composition and local weather conditions. We suggest that rather than changes in average annual, winter, or summer local temperatures or precipitation, the main drivers behind increasing numbers of wintering forest birds in this part of Sweden are an increase in the area of denser forest and dead wood volume, and a decrease in open ground area without forest vegetation. While there may be supplementary explanations behind the increasing numbers of forest birds, such as reduced agriculture, decreasing local human population, or stronger photosynthesis, our results indicate that local land use has been favourable for forest birds in recent decades in this area.</p> 2020-02-29T00:00:00+01:00 Copyright (c) 2020 Björn Ferry, Håkan Rune, Ulf Andersson, Martin Green Changes in numbers and distribution of wintering waterbirds at the south coast of Scania, Sweden, during 55 winters, 1964–2018 2020-05-25T07:21:43+02:00 Leif Nilsson <p class="p2">The south coast of Scania, southernmost Sweden, has long been an important wintering and staging area for waterbirds. A large part of the coast was surveyed annually as a part of the international midwinter counts for 55 years (1964–2018). The total number of wintering waterbirds showed an increasing trend but there was much variation between years. Common Goldeneye <em>Bucephala clangula</em>, followed by Mallard <em>Anas platyrhynchos</em>, Tufted Duck <em>Aythya fuligula </em>and—during the early years—Long-tailed Duck <em>Clangula hyemalis</em>, dominated the community. Great Cormorant <em>Phalacrocorax carbo</em>, Mallard, Common Goldeneye and Eurasian Coot <em>Fulica atra </em>increased in numbers, reflecting the national and international trends related to milder winters and a northward shift of the winter distribution. Eurasian Wigeon <em>Mareca penelope </em>and Great Crested Grebe <em>Podiceps cristatus </em>established wintering traditions in the area during the study period. Tufted Duck and Common Merganser <em>Mergus merganser </em>decreased locally due to a northward shift of the wintering distribution northwards within the country. The Long-tailed Duck was an important winter guest in the first years but was only seen in very small numbers in later years, reflecting the general and large-scale decrease of the Baltic wintering population.</p> 2020-05-25T00:00:00+02:00 Copyright (c) 2020 Leif Nilsson Observations on a presumed bilateral gynandromorph Black Redstart Phoenicurus ochruros paired with a male 2020-04-19T01:43:47+02:00 Nicolas Martinez <p class="p1"><span class="s1">A supposed </span>bilateral gynandromorph Black Redstart <em>Phoenicurus ochruros</em> in northwestern Switzerland formed a pair with a phenotypically classical male, but apparently was not breeding. The bird was documented before and after moult, when all replaced feathers were again of the same sex type. It was also recorded singing, the song being typical for the species. This is the second recorded case of a bilateral gynandromorph Black Redstart, one of only a handful cases where wild bilateral gynandromorph birds have been observed throughout the breeding season, and the first unequivocal documentation of a presumed bilateral gynandromorph bird forming a stable pair with a typical male.</p> 2020-04-19T00:00:00+02:00 Copyright (c) 2020 Nicolas Martinez