Ibis最新文献

{"title":"Essential steps for establishing a large-scale passive acoustic monitoring for an elusive forest bird species: the Eurasian Woodcock (Scolopax rusticola)","authors":"Philip Holderried,&nbsp;Hanna Duschmalé,&nbsp;Dennis Günther,&nbsp;Lars Isenberg,&nbsp;Joy Coppes","doi":"10.1111/ibi.13373","DOIUrl":"https://doi.org/10.1111/ibi.13373","url":null,"abstract":"<p>In light of global biodiversity loss, comprehensive monitoring of species and biodiversity is fundamental for effective conservation management. Technology-driven approaches, particularly in the field of bioacoustics, have gained importance, with autonomous recording units (ARUs) such as the AudioMoth being a notable example. However, a systematic application of this technology in large-scale passive acoustic monitoring (PAM) schemes is challenging because of a lack of species-specific calibration techniques and information on survey design. Using Eurasian Woodcock <i>Scolopax rusticola</i> as our focal species, we present application-oriented guidelines for testing and implementing a terrestrial, single-species PAM scheme. In this process, we assessed the species-specific detection space of AudioMoths, considering the influence of recording setup and location. ARUs had similar detection rates as a human observer when set up in locations with low vegetation. A further comparative analysis of bioacoustic and traditional roding surveys confirmed the comparability of the two methods. The last step comprised an evaluation of BirdNET as a means of automated species detection. Although BirdNET reliably detected Woodcock occurrence, our results underline the need for rigorous testing of computer-aided data analysis as well as recording hardware before establishing PAM. We demonstrate that low-cost open source ARUs and open access analysis tools can yield results on a par with traditional survey methods, and we provide specific recommendations for PAM for Eurasian Woodcock.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"543-561"},"PeriodicalIF":1.8,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13373","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-breeding home range and habitat use by European Pied Flycatcher (Ficedula hypoleuca) in northwest Liberia: apparent resilience to forest degradation?","authors":"Jessica V. Bryant,&nbsp;John W. Mallord,&nbsp;Fraser Bell,&nbsp;Emmanuel Loqueh,&nbsp;Christopher J. Orsman,&nbsp;Roger Skeen,&nbsp;Gordon B. Sambola,&nbsp;Alexander Wuo Saye,&nbsp;Patrick Garteh,&nbsp;Yorgbor Kpawulu,&nbsp;Alison E. Beresford,&nbsp;Juliet A. Vickery,&nbsp;Malcolm D. Burgess","doi":"10.1111/ibi.13378","DOIUrl":"https://doi.org/10.1111/ibi.13378","url":null,"abstract":"<p>Identifying population drivers of migratory birds requires knowledge of species' ecology throughout their annual cycle. For most Afro-Palaearctic migratory species, little is known about non-breeding habitat use, despite extensive land use change in non-breeding areas of sub-Saharan Africa being a key factor implicated in population decline. We radio-tracked 54 Pied Flycatchers <i>Ficedula hypoleuca</i> at two sites of differing levels of forest disturbance, in Liberia, western Africa, over three non-breeding seasons to determine home range size and site fidelity, and describe habitat and tree species preference within home ranges. We found high territory fidelity both within and between years, and a preference for well-wooded landscapes. We found that Pied Flycatcher presence was positively associated with large and mature trees, and areas with a higher density of trees. Pied Flycatchers preferred several tree species that were uncommon within home ranges, and several non-native tree species likely to support a high invertebrate abundance. Pied Flycatchers preferentially selected areas burnt in the same or previous winter, possibly related to enhanced food resources associated with vegetation regrowth following burning. We also found no significant difference in home range size between sites and similar habitat associations despite differences in habitat disturbance. This suggests that human-modified habitats may remain suitable for Pied Flycatchers, as long as they retain moderate tree cover, especially larger, taller and more mature trees, whether native or non-native.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"498-514"},"PeriodicalIF":1.8,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"After second year male European Starlings (Sturnus vulgaris) do not signal age through repertoire size or song bout length over a 1-year period","authors":"Maheshi E. Dharmasiri,&nbsp;Colleen A. Barber,&nbsp;Andrew G. Horn","doi":"10.1111/ibi.13377","DOIUrl":"https://doi.org/10.1111/ibi.13377","url":null,"abstract":"<p>In many passerine species, male song functions as an honest signal of male quality. Male age is one of these qualities, yielding benefits that are direct (e.g. breeding experience) and/or indirect (e.g. viability and good genes). Male European Starlings <i>Sturnus vulgaris</i> are open-ended learners with long and complex songs that add songs to their repertoire throughout their life. We investigated whether repertoire size and song bout duration change with respect to male age from one year to the next in an Atlantic Canadian population of European Starlings. We found that male repertoire size and song bout length did not increase significantly in ASY (after second year) males over a 1-year period. Similarly, we did not detect a relationship between male condition and either repertoire size or song bout length from this small sample. Other aspects of song may be better at signalling male age to females in our population.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"575-582"},"PeriodicalIF":1.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13377","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acoustic detection rate can outperform traditional survey approaches in estimating relative densities of breeding waders","authors":"David Jarrett,&nbsp;Stephen G. Willis","doi":"10.1111/ibi.13375","DOIUrl":"https://doi.org/10.1111/ibi.13375","url":null,"abstract":"<p>Passive acoustic devices are increasingly being used to monitor biodiversity. However, few studies have compared the accuracy of acoustic surveys and traditional surveys against ground-truthed data. Here, we assess whether acoustic recorders used in conjunction with an artificial intelligence (AI) classifier can predict the relative breeding density of four wader species better than traditional fieldworker transect surveys. In a 27-km² upland study site, acoustic data were collected at 83 sampling points and analysed using the BirdNet bird-sound classifier to estimate vocal detection rate at each location; we also carried out concurrent transect bird surveys. To ground-truth these approaches, intensive field surveys were undertaken to identify each breeding territory of our focal species. With both the acoustic dataset and the transect dataset, we used similar analytical approaches (random forest regression trees) to predict relative territory density across the study site, and then compared these predictions with the territory density obtained from the intensive field surveys. The classifier performed well at identifying the presence of target species' vocalizations within 3-s periods for Lapwing (accuracy = 0.911), Curlew (0.826) and Oystercatcher (0.841), but less well for Golden Plover (0.699). For Curlew and Oystercatcher, the predictions obtained from the acoustic approach were a better fit to actual territory density than the transect approach. In contrast, for Lapwing and Golden Plover, the transect predictions outperformed the acoustic predictions, with the acoustic model particularly poor for Golden Plover. We attributed these differences to the performance of the classifier, species' ecology and vocal behaviour. Data gathering for the acoustic approach was more time-efficient than the transect surveys, requiring less than a quarter of the fieldworker days. We conclude that there is high potential for acoustic approaches to augment traditional methods, although species' ecological characteristics should be considered: species that vocalize more frequently, at higher amplitudes and hold larger territories will be better-suited to sampling-based acoustic methods.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"562-574"},"PeriodicalIF":1.8,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13375","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using satellite tracking to assess the use of protected areas and alternative roosts by Whooper and Bewick's Swans","authors":"Joshua C. Wilson,&nbsp;Kevin A. Wood,&nbsp;Larry R. Griffin,&nbsp;Kane Brides,&nbsp;Eileen C. Rees,&nbsp;Thomas H. G. Ezard","doi":"10.1111/ibi.13369","DOIUrl":"https://doi.org/10.1111/ibi.13369","url":null,"abstract":"<p>Protected areas are one of the major tools used in the conservation of biodiversity, but animals are unlikely always to remain within these human-made boundaries. Understanding when and why species choose to leave protected areas can help us to improve the effectiveness of these management tools. Here, we investigate the use of protected and non-protected areas by two migratory species undergoing rapid wintering population changes in northwest Europe: Whooper Swans <i>Cygnus cygnus</i> and Bewick's Swans <i>Cygnus columbianus bewickii</i>. Global positioning system tags were fitted to 15 Whooper Swans in winter 2008/09 and to 18 Bewick's Swans from winter 2013/14 to 2014/15 at the Ouse Washes Special Protection Area (an internationally important roost for wintering waterbirds) and on adjacent fields in southeast England. Here, swans feed on farmland during the day but return to designated reserves to roost at night, where they receive protection from predators and disturbance within managed roost habitats. When swans roost elsewhere at alternative sites, they may face more adverse conditions, and so understanding the extent and causes of the use of alternative roosts is important for swan conservation efforts. The alternative roosting proportion, defined as the proportion of nights spent outside protected reserves, was 0.237 for Bewick's Swans and challenging to quantify accurately for Whooper Swans. A generalized additive mixed model to model repeated measurements on individuals showed that the proportion of time that Bewick's Swans spent at alternative roosts correlated positively with river level and negatively with temperature. Competition and foraging flight distances are thought to drive these relationships, as swans seek access both to roost space and to nearby feeding habitats. Our findings improve our understanding of the environmental conditions under which migratory waterbirds may choose to roost outside protected areas.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"515-529"},"PeriodicalIF":1.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13369","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial consistency affects foraging effort in a benthic diving seabird, the Black-faced Cormorant","authors":"Thomas Cansse,&nbsp;Luc Lens,&nbsp;Grace J. Sutton,&nbsp;Jonathan A. Botha,&nbsp;John P.Y. Arnould","doi":"10.1111/ibi.13371","DOIUrl":"https://doi.org/10.1111/ibi.13371","url":null,"abstract":"<p>For animals which exploit predictable food resources, greater foraging site fidelity has been hypothesized to lead to increased foraging efficiency. However, evidence for this in free-ranging species is limited. In the present study, foraging site fidelity, the factors influencing it and its effect on foraging effort were investigated in the Black-faced Cormorant <i>Phalacrocorax fuscescens</i>, a predominantly benthic forager occurring in southeastern Australia. While the study population was found to have a relatively large foraging range, individuals were highly consistent in the smaller foraging areas which they used. Foraging effort was lower in individuals with a higher foraging site fidelity, which is likely to indicate increased foraging efficiency. Foraging site fidelity differed greatly between individuals but none of the assessed factors (sex, mass, size or year of study) were found to have a significant influence. This might indicate that intrinsic factors which could not be assessed, such as personality or experience, may influence the degree to which individuals exploit known habitats. The findings suggest that changes in prey availability or distribution could result in reduced foraging efficiency and, consequently, negative impacts for the species. Further investigation is required to assess within-individual foraging plasticity to predict potential responses to changing prey availability and distribution.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"468-480"},"PeriodicalIF":1.8,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13371","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A diet perspective on the impact of the COVID-19 lockdown on urban bird assemblages","authors":"Patrycja K. Woszczyło,&nbsp;Peter Mikula,&nbsp;Łukasz Jankowiak,&nbsp;Anna Ondrejková,&nbsp;Piotr Tryjanowski","doi":"10.1111/ibi.13372","DOIUrl":"https://doi.org/10.1111/ibi.13372","url":null,"abstract":"<p>The COVID-19 pandemic, which significantly altered human activities, particularly in urban areas, presented a unique opportunity to explore the dynamics of wildlife–human coexistence. In this study, we conducted bird counts in 36 parks in Poznań, Poland, before (2019) and during (2020) the pandemic lockdown, and assessed the impact of lockdown-induced changes in human activity on the presence of birds with different diet type in the city. We found a notable decrease in the occurrence of granivorous and waste-feeding birds in urban areas during the pandemic, but the presence of birds feeding mainly on other food sources remained relatively unchanged. This study provides initial evidence of a cross-species and diet type-related decline in bird diversity in urban parks during the COVID-19 pandemic.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"397-406"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13372","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use and definitions of the terms arena, lek and court in describing avian courtship sites","authors":"Clifford B. Frith","doi":"10.1111/ibi.13370","DOIUrl":"https://doi.org/10.1111/ibi.13370","url":null,"abstract":"","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 1","pages":"295-298"},"PeriodicalIF":1.8,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bird deterrent measures at a landfill decreased the productivity of a dependent population of White Stork (Ciconia ciconia)","authors":"Laura Osorio,&nbsp;Alejandro López-García,&nbsp;Irene Colino-Freire,&nbsp;Elena Ramos-Elvira,&nbsp;José I. Aguirre","doi":"10.1111/ibi.13367","DOIUrl":"https://doi.org/10.1111/ibi.13367","url":null,"abstract":"<p>Landfills provide an abundant and predictable food source for avifauna. The energy and time that are saved because of landfill-foraging have had positive effects on the distribution of bird breeding populations and their reproductive parameters. However, the proliferation of individuals coinciding with the appearance of landfills often increases human–wildlife conflicts and intensifies the contact between waste and the environment. In this context, a landfill in Madrid (Spain) implemented deterrent measures in 2021 aiming to reduce the influx of birds inside its facilities. This study aims to describe the effects that a reduction in the accessibility and availability of landfill food resources may have had on the surrounding breeding populations of White Stork <i>Ciconia ciconia</i>. For this purpose, the breeding parameters of three populations with different landfill use indices were analysed before and after the application of bird deterrent measures. The closest population, with the highest landfill use index, suffered a drastic reduction in fledgling productivity during the breeding season with bird deterrent measures. On the other hand, a drought during one of the breeding seasons negatively affected the productivity of the populations that relied partially and completely on natural food resources (located at medium and long distance from the landfill, respectively). Landfill-foraging might have mitigated the consequences of the natural food scarcity caused by this drought, even with the application of bird deterrent measures. Overall, our results show the potential negative impact of bird deterrent measures on populations dependent on landfill food, and highlight the importance of assessing the effect of these techniques beyond the site to determine their appropriateness. Due to the imminent closure of landfills and the expected worsening consequences of climate change, monitoring programmes should be established to determine the long-term effects of bird deterrent measures and unusual environmental conditions on White Stork populations.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"407-417"},"PeriodicalIF":1.8,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predicting anthropogenic food supplementation from individual tracking data","authors":"Steffen Oppel,&nbsp;Nathalie Heiniger,&nbsp;Patrick Scherler,&nbsp;Valentijn S. van Bergen,&nbsp;Jérôme Guélat,&nbsp;Robert Weibel,&nbsp;Martin U. Grüebler","doi":"10.1111/ibi.13359","DOIUrl":"https://doi.org/10.1111/ibi.13359","url":null,"abstract":"<p>Many wildlife species consume food or refuse provided by humans. To understand the effect of anthropogenic food subsidies on wildlife populations, we first need to quantify where and when individuals can access such food sources. The Red Kite <i>Milvus milvus</i> is an opportunistic raptor species and uses both inadvertent and deliberate food subsidies provided by citizens. Here we present a new approach using global positioning system (GPS)-tracking data to predict where anthropogenic food subsidies probably occur. We tracked 497 individuals with solar-powered GPS transmitters over an average of 3.2 (range 1–9) breeding seasons in Switzerland, and combined these data with locations of 125 known feeding sites obtained through interviews. We used two sequential random forest models, at both individual movement and population levels, to predict where anthropogenic food subsidies were attended by Red Kites. The first model classified locations that were frequently and regularly revisited, and successfully predicted 85% of locations that were within 50 m of an externally validated feeding site. These predicted locations were aggregated in 500-m grid cells to calculate the proportion of individuals and locations associated with predicted food subsidy. A second model related the presence of known food subsidies to the aggregated predictions. In our study area, 80% of known anthropogenic food provision locations could be correctly identified using Red Kite tracking data, but data sparsity beyond the core range of tracked individuals limits predictions of anthropogenic food subsidies at larger geographical scales. Nonetheless, biologging data can identify ephemeral food sources, and facilitate an assessment of the importance of anthropogenic food subsidies for the fitness of individuals in tracked populations.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 2","pages":"371-385"},"PeriodicalIF":1.8,"publicationDate":"2024-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13359","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}