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Duets encode morphological information from both partners in Rufous Horneros 二重奏编码的形态信息,从双方的合作伙伴红角
IF 1.7 2区 生物学
Avian Research Pub Date : 2025-07-25 DOI: 10.1016/j.avrs.2025.100282
Pedro Diniz , Paulo S. Amorim
{"title":"Duets encode morphological information from both partners in Rufous Horneros","authors":"Pedro Diniz ,&nbsp;Paulo S. Amorim","doi":"10.1016/j.avrs.2025.100282","DOIUrl":"10.1016/j.avrs.2025.100282","url":null,"abstract":"<div><div>Acoustic signals in birds are often influenced by body and beak size (the morphological constraint hypothesis) and may also reflect the sender's condition (the condition dependence hypothesis). However, these ideas have seldom been tested in duetting species, where the acoustics of the combined signal could relate to the morphology of both vocalizing individuals. In this study, we investigated whether specific morphological traits—scaled mass index, wing length, and bill surface area—could predict individual and pair-level characteristics of Rufous Hornero (<em>Furnarius rufus</em>) duets. In this species, partners partially overlap their songs, with males producing faster-paced, lower-pitched songs compared to females. Morphology was most closely associated with the timing of syllables within duets, though different traits were linked to timing in each sex. Females in better condition (indicated by a higher scaled mass index) and with longer wings produced duet phrases with greater variation in syllable duration. In contrast, males with larger bills showed greater variation in both syllable duration and gaps between syllables. The degree of temporal overlap in syllables increased with female condition, but not male condition, suggesting that overlap may signal female quality. Additionally, minimum duet frequency was negatively associated with male condition, indicating that lower-frequency duets may serve as an honest signal of male quality. These findings indicate that the timing of syllables and minimum duet frequency are both condition-dependent and constrained by morphology, allowing receivers to gain multiple insights into the morphology of duetting partners in Rufous Horneros.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 4","pages":"Article 100282"},"PeriodicalIF":1.7,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reproductive resilience and trade-offs: Egg component allocation under nutritional constraints in Japanese Quail 生殖弹性和权衡:营养限制下日本鹌鹑蛋成分的分配
IF 1.6 2区 生物学
Avian Research Pub Date : 2025-07-18 DOI: 10.1016/j.avrs.2025.100278
Gebrehaweria K. Reda , Sawadi F. Ndunguru , Renáta Knop , James K. Lugata , Brigitta Csernus , Gabriella Gulyás , Csaba Szabó , Ádám Z. Lendvai , Levente Czeglédi
{"title":"Reproductive resilience and trade-offs: Egg component allocation under nutritional constraints in Japanese Quail","authors":"Gebrehaweria K. Reda ,&nbsp;Sawadi F. Ndunguru ,&nbsp;Renáta Knop ,&nbsp;James K. Lugata ,&nbsp;Brigitta Csernus ,&nbsp;Gabriella Gulyás ,&nbsp;Csaba Szabó ,&nbsp;Ádám Z. Lendvai ,&nbsp;Levente Czeglédi","doi":"10.1016/j.avrs.2025.100278","DOIUrl":"10.1016/j.avrs.2025.100278","url":null,"abstract":"<div><div>Under natural conditions, organisms regularly experience seasonal or unpredictable fluctuations in their diet that may shape the quantity and quality of their reproduction. While these dietary shifts are known to influence overall reproductive output, their specific effects on the proportional composition of egg components remain unexplored. To partially simulate the natural conditions, we conducted two trials using adult Japanese Quails (<em>Coturnix japonica</em>) to examine how dietary restriction and unpredictable feeding influence the proportional composition of egg components. In the first trial, quails were assigned to one of four treatments: full-fed (control) or restricted feeding at 20% (DR20), 30% (DR30), and 40% (DR40) below daily intake. In the second trial, quails were assigned to one of three treatments: full feeding (control), constant 40% restriction (DR40), or unpredictable feeding schedule (UNPR). Each trial lasted for 14 days, and birds were housed individually. Severe dietary restrictions (DR30, DR40) reduced albumen and shell mass, shell thickness, and egg volume. However, yolk mass, yolk color, egg shape index, and shell density remained unaffected across all dietary levels. Severe restrictions also increased the yolk ratio while reducing the albumen ratio, suggesting that birds may evolutionarily prioritize yolk deposition to sustain reproductive functions. However, reduced albumen content due to maternal nutritional stress may also limit essential nutrients, and disrupt the embryo's osmoregulation, which ultimately affects offspring quality. Reduced shell contents at the severe restriction levels can affect the egg's ability to provide physical protection, regulate gas exchange and control water loss, thereby influencing embryonic development. In contrast, moderate restriction (DR20) and unpredictable feeding (UNPR) had no effect on any of the egg traits. These findings suggest that quails strategically allocate resources among egg components under dietary constraints, indicating potential trade-offs in reproductive investment. The resilience observed under moderate restriction and unpredictability underscores the species' adaptive capacity in fluctuating environments.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 3","pages":"Article 100278"},"PeriodicalIF":1.6,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Patterns of genetic diversity in five species of Passeriformes co-distributed in an environmental gradient 五种通道形目植物在不同环境梯度下的遗传多样性分布模式
IF 1.6 2区 生物学
Avian Research Pub Date : 2025-07-17 DOI: 10.1016/j.avrs.2025.100279
Marcela Restrepo-Arias , Héctor F. Rivera-Gutiérrez , Iván Darío Soto-Calderón , Ernesto Pérez-Collazos , Catalina González-Quevedo
{"title":"Patterns of genetic diversity in five species of Passeriformes co-distributed in an environmental gradient","authors":"Marcela Restrepo-Arias ,&nbsp;Héctor F. Rivera-Gutiérrez ,&nbsp;Iván Darío Soto-Calderón ,&nbsp;Ernesto Pérez-Collazos ,&nbsp;Catalina González-Quevedo","doi":"10.1016/j.avrs.2025.100279","DOIUrl":"10.1016/j.avrs.2025.100279","url":null,"abstract":"<div><div>Understanding the evolutionary processes that influence the distribution of genetic diversity in natural populations is a key issue in evolutionary biology. Both species' distribution ranges and environmental gradients can influence this diversity through mechanisms such as gene flow, selection, and genetic drift. To explore how these forces interact, we assessed neutral and adaptive genetic variation in three widely distributed and two narrowly distributed bird species co-occurring along the Cauca River canyon in Antioquia, Colombia—a region of pronounced environmental heterogeneity. We sampled individuals across eight sites spanning the canyon's gradient and analyzed genetic diversity and structure using microsatellites and toll-like receptors (TLRs), a gene family involved in innate immunity. Widely distributed species consistently exhibited higher genetic diversity at both marker types compared to their narrowly distributed counterparts. Although we did not find a significant relationship between microsatellite heterozygosity and TLR heterozygosity, we evidenced a negative trend for widely distributed species and a positive trend for narrowly distributed species. This result suggests that there is a stronger effect of genetic drift in narrowly distributed species. Our results highlight the role of distribution range in maintaining genetic diversity and suggest that environmental gradients, by interacting with gene flow and selection, may influence patterns of adaptive variation.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 3","pages":"Article 100279"},"PeriodicalIF":1.6,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mammal-rich diet associated with reproductive success of Saker Falcons in Mongolia 蒙古萨克猎鹰的繁殖成功与富含哺乳动物的饮食有关
IF 1.6 2区 生物学
Avian Research Pub Date : 2025-07-09 DOI: 10.1016/j.avrs.2025.100277
Batbayar Bold , Batbayar Galtbalt , Batmunkh Davaasuren , Gankhuyag Purev-Ochir , Amarkhuu Gungaa , Amarsaikhan Saruul , Sarangerel Ichinkhorloo , Ariunzul Lkhagvajav , Nyambayar Batbayar , Yuke Zhang , Zhenzhen Lin , Andrew Dixon , Xiangjiang Zhan
{"title":"Mammal-rich diet associated with reproductive success of Saker Falcons in Mongolia","authors":"Batbayar Bold ,&nbsp;Batbayar Galtbalt ,&nbsp;Batmunkh Davaasuren ,&nbsp;Gankhuyag Purev-Ochir ,&nbsp;Amarkhuu Gungaa ,&nbsp;Amarsaikhan Saruul ,&nbsp;Sarangerel Ichinkhorloo ,&nbsp;Ariunzul Lkhagvajav ,&nbsp;Nyambayar Batbayar ,&nbsp;Yuke Zhang ,&nbsp;Zhenzhen Lin ,&nbsp;Andrew Dixon ,&nbsp;Xiangjiang Zhan","doi":"10.1016/j.avrs.2025.100277","DOIUrl":"10.1016/j.avrs.2025.100277","url":null,"abstract":"<div><div>Understanding how diet influences the breeding success of Saker Falcons (<em>Falco cherrug</em>) is key to assessing the role of food supply in population dynamics and informing conservation strategies. Through pellet analysis, we evaluated the influence of small mammal prey—present in 95% of pellets—on the reproductive performance of the sakers. In Mongolia, three species comprised 95% of the identified small mammals: Mongolian Gerbil (<em>Meriones unguiculatus</em>, 39%), Brandt's Vole (<em>Lasiopodomys brandtii</em>, 49%) and Daurian Pika (<em>Ochotona dauurica</em>, 7%). We found a strong positive association between the proportion of small mammals in the diet and key breeding parameters of sakers. Clutch size, fledged brood sizes, and nest success all increased with a mammal-rich diet. Earlier laying was also linked to higher small mammal intake and was independently associated with improved breeding outcomes. These findings highlight a critical role of small mammal prey in shaping the reproductive success of sakers. Conserving and restoring grassland habitats that support abundant prey populations is essential for sustaining saker populations and achieving long-term conservation goals.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 3","pages":"Article 100277"},"PeriodicalIF":1.6,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nest attentiveness does not impact incubation duration across different bird species 对巢的关注并不影响不同鸟类的孵化时间
IF 1.6 2区 生物学
Avian Research Pub Date : 2025-07-03 DOI: 10.1016/j.avrs.2025.100275
D. Charles Deeming
{"title":"Nest attentiveness does not impact incubation duration across different bird species","authors":"D. Charles Deeming","doi":"10.1016/j.avrs.2025.100275","DOIUrl":"10.1016/j.avrs.2025.100275","url":null,"abstract":"<div><div>Avian incubation is characterised by the contact between the eggs and the bird's skin to transfer heat to increase egg temperature above ambient conditions. Birds can be attentive to the clutch all of the time or, particularly if only one parent incubates, attentiveness may be quite low. Attentiveness is related to egg size with large eggs having high attentiveness, whereas small eggs (&lt;10 g) can have attentiveness ranging from 50% to 100%. Previous studies have suggested that incubation duration is a function of attentiveness albeit for small birds. This study tested the hypothesis that, after controlling for egg size and phylogeny, incubation duration would be a function of attentiveness. Data for 444 bird species representing 24 orders were analysed. Whilst egg mass had a significant relationship with incubation duration, there was no relationship with attentiveness for all of the species or a subset of the passerines. Despite egg temperature drops during an incubation recess, average day-time and night-time temperatures are similar in a range of species. Re-examination of previously reported temperature profiles recorded by dummy eggs over a 24-h period shows that after an incubation recess there seems to be an additional heat flux that raises egg temperature above that seen during night-time periods of constant incubation. The reasons why eggs under intermittent incubation are not considerably cooler than eggs during constant incubation are discussed.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 3","pages":"Article 100275"},"PeriodicalIF":1.6,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Non-selective waterbird hunting in a Natura 2000 site results in killing of protected species: A case study from western Poland 在Natura 2000站点非选择性捕猎水鸟导致受保护物种的死亡:来自波兰西部的案例研究
IF 1.6 2区 生物学
Avian Research Pub Date : 2025-07-03 DOI: 10.1016/j.avrs.2025.100276
Dominik Marchowski , Robert Jurszo , Paweł Stańczak , Michał Jasiński , Sebastian Guentzel
{"title":"Non-selective waterbird hunting in a Natura 2000 site results in killing of protected species: A case study from western Poland","authors":"Dominik Marchowski ,&nbsp;Robert Jurszo ,&nbsp;Paweł Stańczak ,&nbsp;Michał Jasiński ,&nbsp;Sebastian Guentzel","doi":"10.1016/j.avrs.2025.100276","DOIUrl":"10.1016/j.avrs.2025.100276","url":null,"abstract":"<div><div>Non-selective hunting of waterbirds poses a significant challenge in biodiversity-rich areas such as Important Bird Areas (IBAs), where protected and game species congregate. Here, we present evidence from three consecutive hunting seasons spanning autumn 2021 to spring 2024 at a Natura 2000 site in western Poland, based on analyses of hunting bag photographs, local hunting records, and standardized bird monitoring data. We recorded 1331 hunted individuals from 14 species, 43% of which are protected under national or EU legislation. Among these was the Vulnerable Common Pochard (<em>Aythya ferina</em>), listed on the IUCN Red List. For nearly all species, harvest rates exceeded the sustainable thresholds defined by BirdLife International. Statistical comparisons between species' environmental abundance and their representation in hunting bags indicated no selectivity in shooting, pointing to indiscriminate hunting practices. Simultaneous waterbird monitoring (2018–2024) revealed steep declines in the local waterbird community and a marked decrease in Common Crane (<em>Grus grus</em>) numbers, with average autumn roost counts dropping from over 2000 individuals prior to hunting to 320 during hunting seasons. Although causality cannot be directly confirmed, these patterns suggest substantial disturbance effects. Our findings demonstrate the impracticality of selective hunting in species-rich wetland refuges and highlight the systematic killing of protected species. We recommend banning waterbird hunting in IBAs and implementing mandatory bird identification training and certification for hunters to reduce unintended impacts on vulnerable species.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 3","pages":"Article 100276"},"PeriodicalIF":1.6,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regional differences in wintering habitat selection strategies of Siberian Crane (Leucogeranus leucogeranus) and ecological network construction of key wintering areas 西伯利亚鹤越冬生境选择策略的区域差异及重点越冬区生态网络建设
IF 1.6 2区 生物学
Avian Research Pub Date : 2025-06-27 DOI: 10.1016/j.avrs.2025.100273
Jianying Wang, Mingqin Shao
{"title":"Regional differences in wintering habitat selection strategies of Siberian Crane (Leucogeranus leucogeranus) and ecological network construction of key wintering areas","authors":"Jianying Wang,&nbsp;Mingqin Shao","doi":"10.1016/j.avrs.2025.100273","DOIUrl":"10.1016/j.avrs.2025.100273","url":null,"abstract":"<div><div>Poyang Lake (PYL) and the Yellow River Delta (YRD) are two critical wintering areas for the Siberian Crane (<em>Leucogeranus leucogeranus</em>) along the East Asian–Australasian Flyway in China. Based on nearly two decades of remote sensing and environmental data, this study used the MaxEnt model to assess wintering habitat suitability in Poyang Lake (PYL) and the Yellow River Delta (YRD). Landscape pattern and ecological network (EN) analyses were integrated to examine habitat changes and their impact on Siberian Crane distribution. In PYL, land use/land cover (LULC) change was driven primarily by water level fluctuations, leading to transitions among natural habitat types. In contrast, LULC change in YRD was dominated by anthropogenic activities, with widespread conversion of natural habitats into artificial habitats. In both regions, Siberian Cranes favored wetlands that are food-rich, flat, and minimally disturbed. In PYL, ecological sources were mainly found in sub-lakes of nature reserves and nearby moist areas, averaging 87.42 km<sup>2</sup>. In the YRD, sources were distributed across tidal flats, paddy land, and grasslands, with a larger mean area of 198.37 km<sup>2</sup>. Mann–Kendall tests showed significant trends in PYL, including increased patch density and decreased EN cumulative resilience. The maximum habitat suitability in the YRD significantly declined. Comparative analysis revealed that PYL had significantly higher habitat suitability and EN cumulative resilience, whereas the YRD had larger but more fragmented habitats. By introducing key stepping-stone nodes to optimize the ENs, the connectivity and resilience of PYL's EN were notably enhanced. Although improvements in the YRD were less marked, the optimization scheme still improved the security of the crane migration network. Based on the findings, it is recommended to implement refined water level management in PYL to maintain the stability of sub-lakes and adjacent wetlands, and to strengthen the protection of natural wetlands in the YRD by limiting the expansion of artificial land use, in order to mitigate habitat fragmentation.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 3","pages":"Article 100273"},"PeriodicalIF":1.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Trait-mediated responses and co-occurrence patterns of breeding steppe birds under human footprint in Inner Mongolia 人类足迹下内蒙古草原鸟类繁殖的性状介导反应及共现模式
IF 1.6 2区 生物学
Avian Research Pub Date : 2025-06-27 DOI: 10.1016/j.avrs.2025.100274
Wenyu Xu , Chunlu Wang , Yanqi Wang , Xi Yang , Lishi Zhang , Piotr Tryjanowski , Frédéric Jiguet , Zheng Han , Haitao Wang
{"title":"Trait-mediated responses and co-occurrence patterns of breeding steppe birds under human footprint in Inner Mongolia","authors":"Wenyu Xu ,&nbsp;Chunlu Wang ,&nbsp;Yanqi Wang ,&nbsp;Xi Yang ,&nbsp;Lishi Zhang ,&nbsp;Piotr Tryjanowski ,&nbsp;Frédéric Jiguet ,&nbsp;Zheng Han ,&nbsp;Haitao Wang","doi":"10.1016/j.avrs.2025.100274","DOIUrl":"10.1016/j.avrs.2025.100274","url":null,"abstract":"<div><div>Grasslands are among the world's most threatened ecosystems, and steppe birds face increasing risks from human activities. This study investigates how human impacts affect the distribution and community structure of breeding steppe birds in Inner Mongolia, a biodiversity hotspot in Asia. We conducted standardized point-count surveys across a gradient from intact grasslands to urbanized areas, integrating species occurrence data, functional traits and the Human Footprint Index (HFI). Using Generalized Linear Models (GLMs) and Conditional Random Fields (CRFs), we assessed trait-environment interactions and shifts in species associations. Our results indicate that the HFI significantly affects bird communities. Habitat specialists, such as Mongolian Lark (<em>Melanocorypha mongolica</em>), showed negative responses, whereas generalists like Eurasian Tree Sparrow (<em>Passer montanus</em>) thrived in disturbed areas. Trait-based analysis showed that species with larger body mass and specialized diets were negatively associated with HFI, whereas those linked to human-modified habitats exhibiting strong positive associations. In areas with high human footprint, co-occurrence networks grew more polarized: specialists faced intensified competition, while species with positive HFI responses formed stronger positive associations. CRF models indicated that human activities restructure species interactions, favoring generalists and simplifying community dynamics. These findings highlight the dual role of human impact in supporting some species while threatening specialists, potentially driving biotic homogenization. Our study emphasizes the need for conservation strategies that protect vulnerable species and manage those that thrive in human-altered environments. By linking traits and interactions to human impacts, this study provides a framework for identifying at-risk species and guiding conservation in the Anthropocene.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 3","pages":"Article 100274"},"PeriodicalIF":1.6,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Azure-winged Magpies breeding in urban areas can effectively reduce the risk of brood parasitism 蓝翅喜鹊在市区繁殖,可有效降低雏鸟寄生的风险
IF 1.6 2区 生物学
Avian Research Pub Date : 2025-06-24 DOI: 10.1016/j.avrs.2025.100272
Jianping Liu , Yilin Lu , Fudong Zhou , Wei Liang
{"title":"Azure-winged Magpies breeding in urban areas can effectively reduce the risk of brood parasitism","authors":"Jianping Liu ,&nbsp;Yilin Lu ,&nbsp;Fudong Zhou ,&nbsp;Wei Liang","doi":"10.1016/j.avrs.2025.100272","DOIUrl":"10.1016/j.avrs.2025.100272","url":null,"abstract":"<div><div>With the ongoing acceleration of global urbanization, an increasingly larger proportion of natural habitats are being transformed and utilized by humans. Urbanization has a substantial impact on animal populations, exposing them to greater risks, but also presenting new opportunities and resources. Although the effects of urbanization and brood parasitism on the population dynamics and behavior of host birds have received considerable attention, there has been comparatively little research on how urbanization might affect the risk of brood parasitism on host birds. From April to August in 2023 and 2024, we investigated the risk of brood parasitism on Azure-winged Magpies (<em>Cyanopica cyanus</em>) breeding in the urban center, outskirt, and rural areas of Wuhan City, Hubei Province, China. The results revealed significant differences in the risk of brood parasitism among Azure-winged Magpies in the three regions, with the proportion of magpies parasitized by the Asian Koel (<em>Eudynamys scolopaceus</em>) being found to be significantly lower in the city center (0%) than that in outskirt (3.8%) and rural (11.4%) areas. Our results are consistent with the idea that cities can act as refuges that reduce the risk of brood parasitism experienced by host Azure-winged Magpies. Accordingly, breeding in cities enables Azure-winged Magpies to escape brood parasitism by the Asian Koel.</div></div>","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 3","pages":"Article 100272"},"PeriodicalIF":1.6,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144501478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genomic evidence of hybridization between two species of Penduline Tits reveals postzygotic reproductive isolation 两种钟摆山雀杂交的基因组证据揭示了合子后生殖隔离
IF 1.6 2区 生物学
Avian Research Pub Date : 2025-06-19 DOI: 10.1016/j.avrs.2025.100271
Hui Wang , Mansour Aliabadian , Zhengwang Zhang , De Chen
{"title":"Genomic evidence of hybridization between two species of Penduline Tits reveals postzygotic reproductive isolation","authors":"Hui Wang ,&nbsp;Mansour Aliabadian ,&nbsp;Zhengwang Zhang ,&nbsp;De Chen","doi":"10.1016/j.avrs.2025.100271","DOIUrl":"10.1016/j.avrs.2025.100271","url":null,"abstract":"","PeriodicalId":51311,"journal":{"name":"Avian Research","volume":"16 3","pages":"Article 100271"},"PeriodicalIF":1.6,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144595636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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