{"title":"Sammanfattning av doktorsavhandling ”Birds as a model for comparative genomic studies.” (Künster A, 2011, Uppsala Universitet)","authors":"R. Ekblom","doi":"10.34080/os.v22.23144","DOIUrl":"https://doi.org/10.34080/os.v22.23144","url":null,"abstract":"","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761860","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}
{"title":"Ornitologernas världskongress: 2010 i Brasilien, 2014 i Japan – kort referat och inbjudan","authors":"S. Svensson","doi":"10.34080/os.v22.23115","DOIUrl":"https://doi.org/10.34080/os.v22.23115","url":null,"abstract":"","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2012-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69762094","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}
{"title":"A stable bird community during 27 years (1980—2006) in the nemoral broadleaf wood Dalby Söderskog National Park","authors":"S. Svensson","doi":"10.34080/os.v19.22651","DOIUrl":"https://doi.org/10.34080/os.v19.22651","url":null,"abstract":"","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761702","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}
The Penduline Tit Remiz pendulinus is a species that displays uniparental care. Either the female or the male parent abandons the clutch before incubation commences, and both parents desert about 30% of clutches. Deserting individuals may nest again and have up to six partners over a breeding season. We describe five cases of an apparent reversal of the decision to desert by four male and one female Penduline Tit in Sweden and Poland. Several days after abandoning a clutch, the individuals returned to their nests and began incubation. All clutches were successful.
{"title":"Male and female Penduline Tit Remiz pendulinus can reverse their desertion decisions","authors":"B. Czyż, O. Persson, Peter Öhrström","doi":"10.34080/os.v20.22646","DOIUrl":"https://doi.org/10.34080/os.v20.22646","url":null,"abstract":"The Penduline Tit Remiz pendulinus is a species that displays uniparental care. Either the female or the male parent abandons the clutch before incubation commences, and both parents desert about 30% of clutches. Deserting individuals may nest again and have up to six partners over a breeding season. We describe five cases of an apparent reversal of the decision to desert by four male and one female Penduline Tit in Sweden and Poland. Several days after abandoning a clutch, the individuals returned to their nests and began incubation. All clutches were successful.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69762033","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}
A nestbox-breeding population of Great Tits Parus major was studied from 1948 to 2008 in a mixed coniferous-deciduous forest near Örebro, South Central Sweden. The population was relatively stable around 20 pairs until the mid-1980s after which it increased markedly. Mean laying date was advanced by almost 5 days over the 60-year period, with most of the change taking place after 1985. The mean size of first clutches was 8.72 and was negatively related to number of breeding pairs. Mainly because of Pine Marten Martes martes predation, the mean number of fledged young was only 5.76 (all nests) and 7.37 (nests with at least one fledgling). The proportion of second clutches varied from zero to c.20%. Second clutches had a mean size of 7.00 eggs, slightly less than that of replacement clutches (7.29). The mean number of young fledging from these two categories of broods combined was 5.5. Both the clutch size and fledging success found in this study are similar to those in other Swedish studies at similar latitudes.
{"title":"En långtidsstudie av talgoxens Parus major häckningsbiologi i ett mellansvenskt blandskogsområde","authors":"Karl Gustav Schölin","doi":"10.34080/os.v19.22650","DOIUrl":"https://doi.org/10.34080/os.v19.22650","url":null,"abstract":"A nestbox-breeding population of Great Tits Parus major was studied from 1948 to 2008 in a mixed coniferous-deciduous forest near Örebro, South Central Sweden. The population was relatively stable around 20 pairs until the mid-1980s after which it increased markedly. Mean laying date was advanced by almost 5 days over the 60-year period, with most of the change taking place after 1985. The mean size of first clutches was 8.72 and was negatively related to number of breeding pairs. Mainly because of Pine Marten Martes martes predation, the mean number of fledged young was only 5.76 (all nests) and 7.37 (nests with at least one fledgling). The proportion of second clutches varied from zero to c.20%. Second clutches had a mean size of 7.00 eggs, slightly less than that of replacement clutches (7.29). The mean number of young fledging from these two categories of broods combined was 5.5. Both the clutch size and fledging success found in this study are similar to those in other Swedish studies at similar latitudes.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761685","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}
of nest survival of waders breeding on the alpine heath, mainly above 800 m a.s.l., was started in sists of spending a large amount of time searching areas suitable for breeding waders for occurrence and nests of these birds. During such work a pair of Broad-billed Sandpipers were seen and photographed by JH and RR at a small mire close to Aigertstugan, 6 km WSW of Ammarnäs, at about 760 m a.s.l. in early June 2008. The observation site is at about 1 km distance from the upper limit of the birch forest, and to our knowledge this is the
{"title":"Is the breeding distribution of Broad-billed Sandpipers Limicola falcinellus moving uphill?","authors":"Martin Green, Johannes Hungar, R. Rankin","doi":"10.34080/os.v19.22647","DOIUrl":"https://doi.org/10.34080/os.v19.22647","url":null,"abstract":"of nest survival of waders breeding on the alpine heath, mainly above 800 m a.s.l., was started in sists of spending a large amount of time searching areas suitable for breeding waders for occurrence and nests of these birds. During such work a pair of Broad-billed Sandpipers were seen and photographed by JH and RR at a small mire close to Aigertstugan, 6 km WSW of Ammarnäs, at about 760 m a.s.l. in early June 2008. The observation site is at about 1 km distance from the upper limit of the birch forest, and to our knowledge this is the","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761630","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}
{"title":"Indication of an interspecies “spill-over” reaction in Common Swift Apus apus","authors":"O. Tenow, T. Fagerström, Cris Luengo","doi":"10.34080/os.v19.22648","DOIUrl":"https://doi.org/10.34080/os.v19.22648","url":null,"abstract":"","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761644","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}
Through fluffing of the headfeathers the patterning on the nape of the Pygmy Owl can be transformed into a face-like structure known as an occipital face. Concealed patterns, unknown until now and corresponding to real Pygmy Owl eyes, lie dormant until a forward headtilt occurs; the eye pattern itself being produced by the synthesis of patterned parts on at least two feathers, converging into an “eye” only when intentionally exposed. Occipital face patterns of similar general type occur in several Glaucidium species, three of which were examined by the author (Glaucidium gnoma, G. perlatum and G. brasilianum). Surprisingly, no positive evidence of “hidden-eye” patterns was found in these latter species.
通过蓬松的头毛，侏儒猫头鹰的颈上的图案可以变成一个类似脸的结构，被称为枕部脸。隐藏的图案，直到现在还不为人所知，与真正的侏儒猫头鹰的眼睛相对应，一直处于休眠状态，直到头部向前倾斜;眼睛图案本身是由至少两根羽毛上的图案部分合成而成的，只有在有意暴露时才会聚成一只“眼睛”。枕骨面型与一般类型相似的型态存在于几种青花蒿中，笔者对其中三种青花蒿(Glaucidium gnoma, G. perlatum和G. brasilianum)进行了研究。令人惊讶的是，在后一种物种中没有发现“隐藏的眼睛”模式的确凿证据。
{"title":"The occipital face of the Pygmy Owl Glaucidium passerinum","authors":"Mikael Vesnen","doi":"10.34080/os.v20.22644","DOIUrl":"https://doi.org/10.34080/os.v20.22644","url":null,"abstract":"Through fluffing of the headfeathers the patterning on the nape of the Pygmy Owl can be transformed into a face-like structure known as an occipital face. Concealed patterns, unknown until now and corresponding to real Pygmy Owl eyes, lie dormant until a forward headtilt occurs; the eye pattern itself being produced by the synthesis of patterned parts on at least two feathers, converging into an “eye” only when intentionally exposed. Occipital face patterns of similar general type occur in several Glaucidium species, three of which were examined by the author (Glaucidium gnoma, G. perlatum and G. brasilianum). Surprisingly, no positive evidence of “hidden-eye” patterns was found in these latter species.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761959","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}
U. Skyllberg, I. Nousiainen, P. Hansson, Per Bernhardtson, Östen Andersson, Mattias Nordlund
Daily counts and conservative estimates of turn-over showed that at least 3,000 Taiga Bean Geese regularly used the Ume River Delta as the major staging site along the Western Flyway (following the west coast of the Gulf of Bothnia) during spring 2003—2008. Counts across all staging sites yielded 2,700–3,700 geese in southern Västerbotten and 4,000–4,800 at all sites in Västerbotten and Norrbotten. We estimate that 5,000–6,000 geese currently use the Western Flyway. Migration along the Central Flyway (Ostrobothnia, Finland) culminated on average about ten days earlier, meaning that the vast majority of geese using this flyway had left southern Sweden when the Western Flyway was activated. Counts of active migration on 15 April 2007 indicated that geese arriving in the Ume River Delta in late afternoon had passed Alirs öga, Söderhamn, 340 km to the south, five hours earlier. Assuming the same ground speed (68 km h-1) south of Söderhamn, these geese ought to have left either Lake Östen and/or Lake Kvismaren at sunrise, reaching the staging sites in Västerbotten after a 600–700 km non-stop flight.
{"title":"Spring migration of the Taiga Bean Goose Anser f. fabalis along the “Western Flyway” in northern Sweden: numbers in 2003—2008 and timing in comparison with the “Central Flyway” in Finland","authors":"U. Skyllberg, I. Nousiainen, P. Hansson, Per Bernhardtson, Östen Andersson, Mattias Nordlund","doi":"10.34080/os.v20.22645","DOIUrl":"https://doi.org/10.34080/os.v20.22645","url":null,"abstract":"Daily counts and conservative estimates of turn-over showed that at least 3,000 Taiga Bean Geese regularly used the Ume River Delta as the major staging site along the Western Flyway (following the west coast of the Gulf of Bothnia) during spring 2003—2008. Counts across all staging sites yielded 2,700–3,700 geese in southern Västerbotten and 4,000–4,800 at all sites in Västerbotten and Norrbotten. We estimate that 5,000–6,000 geese currently use the Western Flyway. Migration along the Central Flyway (Ostrobothnia, Finland) culminated on average about ten days earlier, meaning that the vast majority of geese using this flyway had left southern Sweden when the Western Flyway was activated. Counts of active migration on 15 April 2007 indicated that geese arriving in the Ume River Delta in late afternoon had passed Alirs öga, Söderhamn, 340 km to the south, five hours earlier. Assuming the same ground speed (68 km h-1) south of Söderhamn, these geese ought to have left either Lake Östen and/or Lake Kvismaren at sunrise, reaching the staging sites in Västerbotten after a 600–700 km non-stop flight.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761970","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}
R. Ottvall, L. Edenius, J. Elmberg, H. Engström, Martin Green, N. Holmqvist, Å. Lindström, T. Pärt, Martin Tjernberg
We have assessed the population trends for the 255 bird species breeding in Sweden (including distinct subspecies), based on data for the last 30 and 10 years, respectively. Over the past 30 years more species have decreased (38%) than increased (32%) in numbers. In particular, formerly common farmland species have fared poorly but this is also true for some forest species. Over the past 10 years there are more species with increasing trends (29%) than there are species with decreasing trends (19%). Trends for several species in long-term decline have levelled off and have in some cases even started to increase. It is not known whether this recent change is a result of conservation efforts or simply that population numbers have stabilised at lower levels now permitted by the environment. It is therefore essential to initiate research devoted to finding factors directly linked to ongoing population changes, particularly for species in long-term decline. To cover population trends for all Swedish species additional monitoring programmes are needed, in particular on owls and in mountain habitats.
{"title":"Population trends for Swedish breeding birds","authors":"R. Ottvall, L. Edenius, J. Elmberg, H. Engström, Martin Green, N. Holmqvist, Å. Lindström, T. Pärt, Martin Tjernberg","doi":"10.34080/os.v19.22652","DOIUrl":"https://doi.org/10.34080/os.v19.22652","url":null,"abstract":"We have assessed the population trends for the 255 bird species breeding in Sweden (including distinct subspecies), based on data for the last 30 and 10 years, respectively. Over the past 30 years more species have decreased (38%) than increased (32%) in numbers. In particular, formerly common farmland species have fared poorly but this is also true for some forest species. Over the past 10 years there are more species with increasing trends (29%) than there are species with decreasing trends (19%). Trends for several species in long-term decline have levelled off and have in some cases even started to increase. It is not known whether this recent change is a result of conservation efforts or simply that population numbers have stabilised at lower levels now permitted by the environment. It is therefore essential to initiate research devoted to finding factors directly linked to ongoing population changes, particularly for species in long-term decline. To cover population trends for all Swedish species additional monitoring programmes are needed, in particular on owls and in mountain habitats.","PeriodicalId":52418,"journal":{"name":"Ornis Svecica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2009-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69761248","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：