Journal of Ornithology最新文献_第6页

Guidelines for appropriate use of BirdNET scores and other detector outputs 鸟网评分和其他检测器输出结果的适当使用指南

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2024-02-14 DOI: 10.1007/s10336-024-02144-5

Connor M. Wood, Stefan Kahl

引用次数: 0

Inequality among offspring, correlates of recruitment and lifetime reproductive success in a long-lived raptor 长寿猛禽后代之间的不平等、招募的相关性和终生繁殖成功率

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2024-02-02 DOI: 10.1007/s10336-023-02141-0

Christopher R. Vennum, Michael W. Collopy, Brian Woodbridge, Christopher W. Briggs

{"title":"Inequality among offspring, correlates of recruitment and lifetime reproductive success in a long-lived raptor","authors":"Christopher R. Vennum, Michael W. Collopy, Brian Woodbridge, Christopher W. Briggs","doi":"10.1007/s10336-023-02141-0","DOIUrl":"https://doi.org/10.1007/s10336-023-02141-0","url":null,"abstract":"Early-life conditions may impact an individual’s ability to survive long enough to reach breeding age as well as its lifetime reproductive success (LRS). We examined how different aspects of parental quality and natal territory habitat were correlated with the probability of recruitment and subsequent LRS in a top avian predator. Using resight and banding data from a 30-year demographic study on Swainson’s Hawks (Buteo swainsoni), we first examined factors related to recruitment probability, followed by a secondary follow-up analysis we explored correlates of reproductive success, tracking the same individuals as they progress through major life stages. Our analysis tracks only individuals marked as nestlings and where both parents were also uniquely marked and known to the study. This marking requirement allowed us to examine mated pair characteristics while simultaneously separating the effects of parental experience by sex. Pair bond duration best explained recruitment and was positively correlated with the probability of offspring being recruited into the local breeding population. For individuals that survived the challenges of early life and recruited, a far smaller subset of individuals, we found that maternal experience best predicted an offspring’s quality, as expressed by LRS, receiving twice the support of other models. Surprisingly, while pair bond duration correlated with recruitment probability, it was not predictive of offspring LRS. These modeling steps mirror the progressive removal of frail individuals from the population, and reveal that different aspects predict success in advancing life stages. We hypothesize that more established pairs can successfully fledge lower quality offspring that recruit but subsequently have low lifetime reproductive success, while maternal effects have a large influence on offspring quality.","PeriodicalId":54895,"journal":{"name":"Journal of Ornithology","volume":"69 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139665555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Multiple ancestral populations as the key to the successful colonisation of the Carpathians by Goosanders 多个祖先种群是古桑德人成功殖民喀尔巴阡山脉的关键

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2024-01-31 DOI: 10.1007/s10336-023-02140-1

Ł. Kajtoch, P. Lešo, K. Żukowska, G. Karaszkiewicz, J. Kizek, P. Drengubiak, A. Piestrzynska-Kajtoch

引用次数: 0

Savanna Nightjars (Caprimulgus affinis stictomus) adjust calling height to gain amplitude advantage in urban environments 热带草原夜鸦（Caprimulgus affinis stictomus）在城市环境中调整鸣叫高度以获得振幅优势

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2024-01-31 DOI: 10.1007/s10336-023-02142-z

Shih-Hsiung Liang, Chia-Hung Jen, Lin-Lee Lee, Chao-Chieh Chen, Bao-Sen Shieh

{"title":"Savanna Nightjars (Caprimulgus affinis stictomus) adjust calling height to gain amplitude advantage in urban environments","authors":"Shih-Hsiung Liang, Chia-Hung Jen, Lin-Lee Lee, Chao-Chieh Chen, Bao-Sen Shieh","doi":"10.1007/s10336-023-02142-z","DOIUrl":"https://doi.org/10.1007/s10336-023-02142-z","url":null,"abstract":"Anthropogenic noise and buildings are two significant challenges to birds in urban living environments. The Savanna Nightjar Caprimulgus affinis stictomus is a successful urban nocturnal caprimulgiform in Taiwan. It has been found to prefer calling in areas with more buildings to calling in less-developed areas. However, research has yet to be conducted to investigate the relationship between calling height and its possible advantages with regard to acoustic adaptation for the species. We performed field observation and playback experiments to test three hypotheses: the obstacle reduction advantage, the masking reduction advantage, and the amplitude increase advantage. Our results of field observation showed that the mean calling heights were all lower than the tallest building heights within the territories; thus, the obstacle reduction advantage hypothesis was not supported. We also found that calling heights were significantly affected by the building structures but not the ground noise levels; therefore, the masking reduction advantage hypothesis was rejected. To further verify the amplitude increase advantage, we conducted playback experiments at open and walled sites. We found that amplitude measurements were significantly higher for calls broadcast at the walled site than those at the open site. Our findings suggest that Savanna Nightjars adjust their calling heights to reach optimal building wall surroundings to make their calls reverberate and thus increase their call amplitudes, and the benefits of increasing call amplitude may be one of the vital selective forces for Savanna Nightjars to call preferentially in urban areas with buildings.","PeriodicalId":54895,"journal":{"name":"Journal of Ornithology","volume":"57 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139646226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

White stork Ciconia ciconia nests as an attractant to birds and bats 吸引鸟类和蝙蝠的白鹳 Ciconia ciconia 鸟巢

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2024-01-25 DOI: 10.1007/s10336-023-02143-y

Piotr Tryjanowski, Łukasz Jankowiak, Łukasz Myczko, Peter Mikula, Andrzej Łuczak

引用次数: 0

Competitive interactions of two sympatric raptors affecting their spatial distribution in an island environment 两种同栖猛禽的竞争互动影响它们在岛屿环境中的空间分布

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2024-01-04 DOI: 10.1007/s10336-023-02124-1

{"title":"Competitive interactions of two sympatric raptors affecting their spatial distribution in an island environment","authors":"","doi":"10.1007/s10336-023-02124-1","DOIUrl":"https://doi.org/10.1007/s10336-023-02124-1","url":null,"abstract":"<h3>Abstract</h3> Competition within and between species affects community structure and is well documented in raptors. We investigated the spatial distribution of two sympatric raptors in Cyprus, the Bonelli’s Eagle (BE) and the Long-legged Buzzard (LLB). Both species are facultative tree/cliff nesters, with overlapping nesting and foraging areas. In 2021, the BE population consisted of 40 pairs with a density of 1,3 pairs/100 km2, and the LLB population of 113 pairs with 2,9 pairs/100 km2. About 80% of BE nesting sites and 43% of LLB nesting sites were situated within the Natura 2000 (N2K) protected areas network while 97% of BE nesting sites and 91% of LLB’s were situated within 2.5 km from N2K areas. The spatial distribution was compared between and within species based on Nearest Neighbour Distance (NND) analysis. Average intraspecific NND for BE was 6.158 ± 2.207 m (SD), almost double compared to LLB which was 3.151 ± 1.730 m (SD). The distribution of BE nesting territories showed a regular spacing, indicating a stronger effect of intraspecific competitive interactions, whereas LLB nesting territories did not differ significantly from random. Average interspecific NND for BE was 5.339 ± 3.719 m (SD) and for LLB 5.673 ± 3.931 m (SD). Only the LLB had a regular pattern, suggesting that LLB pairs take into account neighbouring BE active territories when establishing their own, while the opposite is not the case. Therefore, the LLB, which is the smaller of the two raptors, avoids BE nesting sites by placing its nests further than to conspecifics. NNDs in 2021 were lower compared to previous studies in Cyprus, in 2005 for LLB and 2009 for BE, indicating an increase in both species’ densities.","PeriodicalId":54895,"journal":{"name":"Journal of Ornithology","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139092369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Are red-crested cardinals Paroaria coronata (Aves: Thraupidae) truly monomorphic?: evidence discloses sexual dichromatism and size differences since the nestling stage 红顶红雀Paroaria coronata（鸟类：Thraupidae）真的是单形的吗？

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2024-01-04 DOI: 10.1007/s10336-023-02139-8

Luciano N. Segura, Melina Atencio, Facundo X. Palacio, Adrián Jauregui, Bettina Mahler

{"title":"Are red-crested cardinals Paroaria coronata (Aves: Thraupidae) truly monomorphic?: evidence discloses sexual dichromatism and size differences since the nestling stage","authors":"Luciano N. Segura, Melina Atencio, Facundo X. Palacio, Adrián Jauregui, Bettina Mahler","doi":"10.1007/s10336-023-02139-8","DOIUrl":"https://doi.org/10.1007/s10336-023-02139-8","url":null,"abstract":"The red-crested cardinal (Paroaria coronata) is an emblematic bird of the southern cone of South America that has been traditionally classified as sexually monomorphic and monochromatic from a human visual perspective. Using reflectance spectrometry, we analyzed sexual differences in the coloration of the red head plumage patch of adult wild red-crested cardinals in central-eastern Argentina. We also described sexual differences in body size and determined the onset of morphometric differences by comparing morphological measurements and growth rate between male and female nestlings. Adult males had on average longer wings and brighter red plumage relative to females. Similar to adults, nestlings were sexually dimorphic at fledging and presented sex-specific growth curves. Male nestlings grew faster and reached a larger size at the fledging time. Both for adults and nestlings, wing length was the trait that expressed sexual differences in body size. Our results are consistent with recent studies in passerines indicating that many birds considered sexually monochromatic are likely dichromatic when considering avian visual capacities. This study allows the red-crested cardinal to be re-categorized as sexually dimorphic and dichromatic.","PeriodicalId":54895,"journal":{"name":"Journal of Ornithology","volume":"20 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139105049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Ecological niche modelling reveals an elevated threat status for the Nilgiri Pipit (Anthus nilghiriensis) 生态位建模揭示尼尔吉里鸻（Anthus nilghiriensis）面临的高威胁状况

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2023-12-28 DOI: 10.1007/s10336-023-02133-0

Abhimanyu Lele, M. Arasumani, C. K. Vishnudas, Pankaj Koparde, Viral Joshi, V. V. Robin

{"title":"Ecological niche modelling reveals an elevated threat status for the Nilgiri Pipit (Anthus nilghiriensis)","authors":"Abhimanyu Lele, M. Arasumani, C. K. Vishnudas, Pankaj Koparde, Viral Joshi, V. V. Robin","doi":"10.1007/s10336-023-02133-0","DOIUrl":"https://doi.org/10.1007/s10336-023-02133-0","url":null,"abstract":"South India’s Western Ghats are a global biodiversity hotspot and an area of conservation concern with numerous endemic species. There is an urgent need for accurate threat assessments for these species, including the Nilgiri Pipit (Anthus nilghiriensis). The Nilgiri pipit is endemic to the montane grasslands of the Western Ghats, and has experienced recent rapid habitat declines. Here, we characterize the climatic niche of this species using environmental niche modelling, and use these models to estimate its range and threat status. Using the Maxent modelling algorithm and presence data from surveys by expert observers, we find that the Nilgiri Pipit is strongly sensitive to higher temperatures. We project the best-performing models to the last glacial maximum and find evidence that the species had a considerably larger range under that climatic regime. We estimate that the extent of suitable available habitat is no more than 436 km2 even using the most conservative threshold. Based on this result, and the documented decline in and fragmentation of its habitat, we recommend that the species be uplisted to “endangered” on the IUCN Red List, from its current status of “vulnerable”. Finally, we compare these results to models based on identically processed eBird data, and find that eBird data produce larger estimates of suitable habitat: we, therefore, recommend caution in the interpretation of environmental niche models based on eBird data.","PeriodicalId":54895,"journal":{"name":"Journal of Ornithology","volume":"19 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139051658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Melanin-based plumage coloration and melanin content in organs in the barn owl 谷仓鸮基于黑色素的羽色和器官中的黑色素含量

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2023-12-26 DOI: 10.1007/s10336-023-02137-w

Alexandre Roulin, Sylvain Dubey, Shosuke Ito, Kazumasa Wakamatsu

引用次数: 0

Start of dawn singing as related to physical environmental variables in an alpine environment 高山环境中黎明歌唱的开始与物理环境变量的关系

IF 1.3 4区生物学

Journal of Ornithology Pub Date : 2023-12-23 DOI: 10.1007/s10336-023-02134-z

Julia Paterno, Fränzi Korner-Nievergelt, Pia Anderwald, Valentin Amrhein

{"title":"Start of dawn singing as related to physical environmental variables in an alpine environment","authors":"Julia Paterno, Fränzi Korner-Nievergelt, Pia Anderwald, Valentin Amrhein","doi":"10.1007/s10336-023-02134-z","DOIUrl":"https://doi.org/10.1007/s10336-023-02134-z","url":null,"abstract":"Birds often have a peak of singing activity at dawn, and the timing of dawn song is species-specific. However, the start of singing at dawn may also depend on environmental factors. We investigated the effects of different environmental variables on the start of dawn singing in six common songbird species in the woodlands of the Swiss National Park. Moon phase, aspect, temperature and road noise had the most consistent effects across species: dawn singing started earlier after brighter and warmer nights, on more east-exposed slopes, and in areas with more road noise. On average, birds started to sing 2.8 min earlier in areas with high road noise level compared to areas without road noise, and 4.7 min earlier in east-exposed slopes compared to west-exposed slopes. Further, birds started to sing on average 5.0 min earlier after full moon compared to new moon nights, 1.2 min earlier after warmer compared to colder nights, and 2.5 min earlier at 2200 m than at 1500 m a.s.l. The effects of date were more species-specific: Alpine Tits started to sing on average 4.9 min later at the end compared to the beginning of the study period, whilst Song Thrushes started to sing 9.0 min earlier. Our findings are in line with the results of previous studies on the effects of road noise, nocturnal light, and partly on temperature. Our study shows that variation in environmental variables may influence the start of dawn singing in different ways, and that anthropogenic factors like road noise can affect bird behaviour even in a highly protected area.","PeriodicalId":54895,"journal":{"name":"Journal of Ornithology","volume":"18 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139028007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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