Ibis最新文献

{"title":"Experimental evidence of slight alteration of male Collared Flycatcher songs based on the female audience","authors":"Mónika Jablonszky,&nbsp;Karola Barta,&nbsp;Katalin Krenhardt,&nbsp;Gergely Nagy,&nbsp;Sándor Zsebők,&nbsp;László Zsolt Garamszegi","doi":"10.1111/ibi.13410","DOIUrl":"https://doi.org/10.1111/ibi.13410","url":null,"abstract":"<p>Bird song is an important and variable sexual signal in many passerine species. One function of this variability may be that males show mate choice and can alter their song according to the quality of the female to which they are singing. If attractive songs are costly, we can hypothesize that males sing more attractively or invest more in singing when trying to attract a better-quality partner. We tested this hypothesis with a field experiment in a wild population of Collared Flycatchers <i>Ficedula albicollis</i>. We presented female stimuli differing in the amount of plumage ornamentation to males on their territory and then recorded their song. We repeated the experiment at least twice for each individual with different female stimuli. We obtained 67 recordings from 29 males, each with 10–50 song responses. Five song traits (song length, mean frequency, frequency bandwidth, tempo and complexity) extracted from the recordings were used in further analyses examining whether the identity of the focal male and the female stimuli explain variance in song traits, and whether males change their songs when exposed to different females. While among-individual variance was considerable in all investigated song traits, female stimuli explained variance only in complexity and tempo. This indicates that males alter these song traits if they sing to different females. We could not clearly identify whether the difference in the response to female stimuli was driven by female quality either at population or individual levels. Overall, our results reveal individuality in song plasticity, and suggest that male mate choice may exist in this species.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 4","pages":"1028-1042"},"PeriodicalIF":2.1,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13410","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101951","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":"Absence of negative effect of GPS-tags on survival and breeding success in a long-lived territorial raptor","authors":"Lise Viollat,&nbsp;Roger Pradel,&nbsp;Cécile Ponchon,&nbsp;Alain Ravayrol,&nbsp;Alexandre Millon,&nbsp;Aurélien Besnard","doi":"10.1111/ibi.13406","DOIUrl":"https://doi.org/10.1111/ibi.13406","url":null,"abstract":"<p>GPS tracking has enabled significant advances in the study of animal movements such as migration and habitat use. However, GPS devices can affect the behaviour of tagged individuals, especially for flying animals such as birds, and may ultimately impair their reproduction and/or survival. While numerous studies have investigated the potential negative effects of GPS-tags on birds, few have simultaneously looked at these effects on reproduction and survival, with studies on the latter sometimes suffering from methodological flaws. This study investigated the effects of GPS-tagging on the breeding success and survival of a medium-sized raptor, Bonelli's Eagle <i>Aquila fasciata</i>. Forty-five breeding adults were equipped with backpack-mounted GPS-tags representing 1.2–3.5% of individual body mass. Using a recently developed capture–mark–recapture model that accounts for differences in detectability between types of tags (metal ring, coloured ring or GPS), our results showed no significant differences in survival or breeding success between GPS-tagged and banded individuals. Overall, we did not observe deleterious effects of GPS-tagging on Bonelli's Eagle that would warn against the use of GPS-tags in this species, or other medium-to-large raptors, given the relevant information they might provide for conservation.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 4","pages":"1053-1064"},"PeriodicalIF":2.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13406","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101900","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":"Late Pleistocene Great Bustards Otis tarda from the Maghreb, eastern Morocco","authors":"Joanne H. Cooper,&nbsp;Nigel J. Collar,&nbsp;Abdeljalil Bouzouggar,&nbsp;Nick Barton,&nbsp;Louise Humphrey","doi":"10.1111/ibi.13404","DOIUrl":"https://doi.org/10.1111/ibi.13404","url":null,"abstract":"<p>The Moroccan population of the globally endangered Great Bustard <i>Otis tarda</i> is close to extinction. Although it is genetically distinct from the Iberian population, no evidence has been previously available to establish the age of its presence in Morocco. A radiocarbon-dated assemblage of Great Bustards from the cemetery cave at Taforalt now confirms the species as a breeding resident of the Maghreb during the Late Pleistocene, ca. 14 700 years before the present. Furthermore, the remains reveal these birds to have been the subject of human exploitation and ritual behaviours. Recognition of the species' ancient status in Morocco reinforces the importance of this isolated and declining population and may help to add impetus to existing conservation efforts.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 4","pages":"991-1001"},"PeriodicalIF":2.1,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13404","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101641","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":"Methods of acoustic data processing affect species detectability in passive acoustic monitoring of multi-species playback","authors":"Dominika Winiarska,&nbsp;Paweł Szymański,&nbsp;Tomasz S. Osiejuk","doi":"10.1111/ibi.13405","DOIUrl":"https://doi.org/10.1111/ibi.13405","url":null,"abstract":"<p>Passive acoustic monitoring (PAM) efforts have recently been accelerated by the development of automated detection tools, enabling quick and reliable analysis of recordings. However, automated methods are still susceptible to errors, and human processors achieve more accurate results. Our study evaluates the efficacy of three detection methods (auditory, visual and automated using BirdNET) for 43 European bird species (31 diurnal, 12 nocturnal), analysing the impact of various factors on detection probability over different distances. We conducted transmission experiments in two forest types from March to June, examining the effect of call characteristics, weather conditions and habitat features, to assess their impact on detection probability at different distances. Our findings reveal that species detection distance varies with each detection method, with listening to recordings obtaining the highest detectability, followed by the visual method. Although BirdNET is less accurate, it still proves useful for detection, especially for loud species. Large diurnal and small nocturnal species were most detected. Our study emphasizes the importance of considering detection methods to maximize species detectability for effective PAM research.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 3","pages":"789-802"},"PeriodicalIF":1.8,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308746","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":"Post-fledging movements in an elusive raptor, the Eurasian Goshawk (Accipiter gentilis): scale of dispersal, foraging range and habitat interactions in lowland England","authors":"Ian G. Henderson,&nbsp;Madeleine Barton,&nbsp;Anna Field,&nbsp;Rob Husbands,&nbsp;Gareth Jones,&nbsp;Neal Armour-Chelu,&nbsp;Greg Conway","doi":"10.1111/ibi.13403","DOIUrl":"https://doi.org/10.1111/ibi.13403","url":null,"abstract":"<p>Studies of the response of high-trophic-level predatory species to environmental gradients contribute to our understanding of adaptation, dependency and risk, both to the predator and its prey. Many such species are of high conservation concern because of a slow life history and a greater susceptibility to threats, not least in organized anthropogenic landscapes that have the propensity to modify or even distort predator–prey dynamics. There are, however, observational difficulties in studying species that are wide-ranging and furtive in their behaviour. All the above characteristics are shared by the Eurasian Goshawk <i>Accipiter gentilis</i>, a highly elusive species for which the movements and habitat associations are poorly quantified at large geographical scales. In Great Britain, this species is of further interest because the population is recovering from the historical impacts of persecution. Here we used remote tracking methods to gather spatially accurate accumulations of data for reliable depictions of movement scale and habitat use in Eurasian Goshawks during the early months of independence from the nest environment (termed ‘first-winter’). The data were taken from two regions of England for good geographical representation of lowland habitats. First-winter Eurasian Goshawks exhibited strongly philopatric characteristics with low levels of natal dispersal once settled. They adopted sedentary and localized foraging patterns, averaging less than 5 km in diameter for approximately 90% of the time, located on the periphery of breeding habitat and centred on farmland or farmland edge, unlike the more forest-centric adults. The use of farmland was especially the case for the first-winter males compared with females, which we speculate may be driven by competitive exclusion or hunting advantages. The results are discussed in the context of future population recovery and colonization, while recognizing existing and emerging threats, including diseases such as highly pathogenic avian influenza and trichomonosis. The study also serves as a methodological demonstration of the capacity for tracking technology to contribute more to our understanding of predators and, by extension, predation as a response to change (such as land-use practice), that can shape observed patterns of conflict.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 3","pages":"660-678"},"PeriodicalIF":1.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308910","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":"Genetic diversity and the implications of captive rearing for a small population of Black-tailed Godwits","authors":"Jennifer Smart,&nbsp;Yvonne I. Verkuil,&nbsp;Krijn B. Trimbos,&nbsp;Nicola C. Dessi,&nbsp;Rebecca Lewis","doi":"10.1111/ibi.13400","DOIUrl":"https://doi.org/10.1111/ibi.13400","url":null,"abstract":"<p>Black-tailed Godwit <i>Limosa limosa limosa</i> clutches have been collected for headstarting, a captive rearing intervention where eggs are taken from the wild and artificially incubated, and chicks are reared in captivity to fledging, before being released into the wild. This conservation measure has reduced local extinction risk for the UK population, but it may have impacts on genetic diversity and population viability, especially when wild-sourced eggs must be collected from a small population. Comparing the UK population of 42 pairs with the much larger breeding population in the Netherlands (~30 000 pairs), we found that levels of heterozygosity and inbreeding are not currently compromised, and allelic richness in the UK population was not significantly different from the Dutch population, but relatedness estimates suggest that 6.1% of the individuals in the UK are closely related, at the level of half-sibling and up, compared with 1.9% in the Dutch population. Increasing levels of relatedness could further deplete genetic variation, in the absence of immigration or the introduction of wild-sourced eggs from other populations.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 3","pages":"812-818"},"PeriodicalIF":1.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13400","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309118","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":"Foraging niche partitioning within a recently established guild of falcons","authors":"Alessandro Berlusconi,&nbsp;Mauro Gobbi,&nbsp;Alessio Martinoli,&nbsp;Riccardo Alba,&nbsp;Giacomo Assandri,&nbsp;Fabio Bona,&nbsp;Filippo M. Buzzetti,&nbsp;Claudia De Battisti,&nbsp;Carlo Morelli,&nbsp;Davide Scridel,&nbsp;Jacopo G. Cecere,&nbsp;Damiano Preatoni,&nbsp;Andrea Romano,&nbsp;Diego Rubolini,&nbsp;Adriano Martinoli,&nbsp;Michelangelo Morganti","doi":"10.1111/ibi.13399","DOIUrl":"https://doi.org/10.1111/ibi.13399","url":null,"abstract":"<p>Ecological theory predicts that coexisting species should exhibit realized niche differentiation to minimize competition. However, little is known about patterns of niche differentiation when ‘newcomer’ species spontaneously colonize a new region, leading to novel sympatric conditions. Over the past 15 years, three closely related and ecologically similar falcon species (Common Kestrel <i>Falco tinnunculus</i>, Lesser Kestrel <i>Falco naumanni</i> and Red-footed Falcon <i>Falco vespertinus</i>) have expanded their ranges as the result of land-use and climate changes in the intensively cultivated agroecosystems of the Po Plain (Northern Italy). This is a unique condition in the European range of these species and provides an excellent opportunity to investigate patterns of foraging and trophic niche partitioning during the initial phases of sympatry. We assessed species-specific patterns of foraging habitat selection and interspecific differences in diet composition. Our findings showed that falcons selected largely overlapping foraging habitats, yet exhibited significant differentiation among species regarding vegetation height, structure and crop types. Overall, diet composition was similar, though some degree of trophic niche differentiation was detected. In line with the niche partitioning hypothesis, the three species slightly partitioned their foraging and trophic niches, probably playing a key role in making syntopic coexistence possible. Our study provides insights into the mechanisms of niche partitioning when ‘newcomers’ appear in a guild, a process that is likely to become increasingly relevant because of the rapid and often uneven distributional shifts caused by global change.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 3","pages":"734-749"},"PeriodicalIF":1.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13399","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309111","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":"Migration and stopover use by GPS-tracked adult Ospreys (Pandion haliaetus) from Germany","authors":"Bernd-Ulrich Meyburg,&nbsp;Daniel Holte","doi":"10.1111/ibi.13402","DOIUrl":"https://doi.org/10.1111/ibi.13402","url":null,"abstract":"<p>The ability to meet the high energetic costs of long-distance migration can be a key factor in the survival of individual birds. The use of stopovers, where individuals pause to rest and feed, is a common strategy in many migratory bird species. In this study, we explore migration timing of 28 satellite-tracked (17 GPS and 11 Argos) adult migratory Ospreys <i>Pandion haliaetus</i> from northeastern Germany. For 15 of the GPS-tracked birds that migrated to Africa, we used Generalized Linear Mixed-effects Models to analyse the effects of sex, migration period, departure date and other factors on the number of stopovers per season, and the individual and total lengths of stay at stopover sites. Female long-distance migrants arrived at breeding sites earlier than male long-distance migrants in spring, contradicting common theory. Females left the breeding sites on autumn migration more than a month before males. The number of stopovers was not affected by the variables tested, but more stopovers led to longer total stays per individual migration period. Autumn stopovers were longer in total (males: mean = 58.1 h (95% CI = 31.1–85.0); females: mean = 164.0 (98.3–229.6)) than spring stopovers (males: mean = 50.9 h (0.0–114.6); females: mean = 39.9 (11.9–67.9), especially with early autumn departure dates. Ospreys spent long periods at stopovers mainly at high latitudes (in Europe), but relatively long stopovers were also observed in North Africa (between the Mediterranean and the Sahara), so stopover length did not vary with latitude. Seasonal fidelity to stopover sites between years was low, except for five females. This flexibility complicates the establishment of protected areas for migrating Ospreys along the migratory flyway.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 3","pages":"646-659"},"PeriodicalIF":1.8,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13402","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308597","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":"Hybridization and genome-wide introgression in sympatric populations of North American wood-pewees (Contopus sordidulus and Contopus virens)","authors":"Joseph D. Manthey,&nbsp;Mark B. Robbins","doi":"10.1111/ibi.13401","DOIUrl":"https://doi.org/10.1111/ibi.13401","url":null,"abstract":"<p>The Great Plains contains many contact zones between eastern and western North American bird species. In these contact zones, closely related lineages or species vary widely in both the geographical and the genomic extent of their hybridization. Two phenotypically similar sister species of flycatchers – the Eastern Wood-Pewee <i>Contopus virens</i> and the Western Wood-Pewee <i>Contopus sordidulus</i> – have sparse geographical overlap in the Great Plains, including a few isolated planted forest stands and along forested riparian corridors of the Niobrara and Platte rivers in central Nebraska, USA. Our previous genetic work found low levels of genetic differentiation between these two flycatcher species, along with several putatively admixed individuals in this zone of sympatry in Nebraska. Here, we used whole-genome sequencing to confirm the presence of admixed individuals and quantify nonrandom gene flow, both in direction between taxa and location in the genome. We confirm the presence of both early-generation hybrids and highly backcrossed individuals in this contact zone. We found moderate levels of genetic differentiation between the two species, with the highest differentiation on the Z chromosome. In addition, all individuals in sympatry contained at least some minor parental genomic ancestry, suggestive of bidirectional introgression. There was evidence of introgression in sympatric individuals across the entire genome, except for approximately half the Z chromosome, suggesting that there is some selection and resistance to admixture in this genomic region.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 3","pages":"750-764"},"PeriodicalIF":1.8,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309205","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":"Past research and future directions in understanding how birds use their sense of smell","authors":"Darcy Creece,&nbsp;Rafael Freire,&nbsp;Melanie Massaro","doi":"10.1111/ibi.13398","DOIUrl":"https://doi.org/10.1111/ibi.13398","url":null,"abstract":"<p>Our understanding of the functional importance of olfaction to birds has improved over the past 60 years, largely as the result of experimental studies testing how birds use their sense of smell in different contexts. As it is impossible to measure directly which odours birds can detect, we rely on measuring behavioural responses to scent cues or manipulations which diminish their olfactory acuity. Here, we review the findings of these studies structured by when and how birds used their sense of smell: during foraging, navigation, social interactions with con- or hetero-specifics, nesting or for predator detection. Most studies investigated how birds use their olfactory sense during foraging (<i>n</i> = 52) and nesting (<i>n</i> = 42), but fewer examined how birds use olfaction during social interactions (<i>n</i> = 38), navigation (<i>n</i> = 20) or predator recognition (<i>n</i> = 21). Knowledge is mainly restricted to certain Orders (e.g. Procellariiformes). Although the diversity of neuroanatomical and molecular structures underlying olfaction suggests that olfactory acuity varies considerably among extant bird species, an understanding of which ecological factors drive selection for olfactory acuity in birds is mostly lacking. How experiences expand a bird's chemosensory knowledge over time and whether birds can learn to recognize odours associated with foraging opportunities or danger from predators is still poorly understood. Finally, there is a lack of knowledge about how long some volatiles remain useful to birds before they have decayed, and which volatiles, or combinations of volatiles, contained within some olfactory cues are being detected by birds. We encourage ornithologists to tackle these broader questions to better understand the functional importance of olfaction to birds.</p>","PeriodicalId":13254,"journal":{"name":"Ibis","volume":"167 4","pages":"853-881"},"PeriodicalIF":2.1,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ibi.13398","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101343","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}