Open Ornithology Journal最新文献

Description of New American Carduelis/Spinus Bird Species in La Paz (Bolivia): C./S. lapazensis. 玻利维亚拉巴斯美洲Carduelis/Spinus鸟类新种描述:c /S。lapazensis。

Open Ornithology Journal Pub Date : 2020-08-19 DOI: 10.2174/1874453202013010024

A. Arnaiz-Villena, V. Ruíz-del-Valle, Fabio Suarez-Trujillo, Adrián López-Nares, Alvaro Callado, E. Gomez-Casado, Estefania Crespo-Yuste, C. Campos

引用次数: 0

Glucose Concentrations in Closely Related Titmice (Baeolophus) Species Linked to Regional Habitat Differences Across an Avian Hybrid Zone 近缘山雀(Baeolophus)物种的葡萄糖浓度与鸟类杂交带的区域栖息地差异有关

Open Ornithology Journal Pub Date : 2020-07-31 DOI: 10.2174/1874453202013010010

Jennifer C. Vaughn, G. Voelker, J. Heatley

引用次数: 3

Bird Diversity in Nensebo Moist Afromontane Forest Fragment, South Eastern Ethiopia. 埃塞俄比亚东南部Nensebo湿润非洲山地森林片段的鸟类多样性。

Open Ornithology Journal Pub Date : 2020-04-21 DOI: 10.2174/1874453202013010001

Ziyad Jemal, Zerihun Girma, Girma Mengesha

引用次数: 2

Influence of Disturbance on Avian Communities in Agricultural Conservation Buffers in Mississippi, USA 干扰对美国密西西比州农业保护缓冲区鸟类群落的影响

Open Ornithology Journal Pub Date : 2019-12-31 DOI: 10.2174/187445320191200016

Heidi L. Adams, L. Burger, S. Riffell

引用次数: 0

Threats and Vision for the Conservation of Galápagos Birds 加拉帕戈斯鸟类保护的威胁与展望

Open Ornithology Journal Pub Date : 2019-01-31 DOI: 10.2174/1874453201912010001

G. Jiménez-Uzcátegui, D. Wiedenfeld, C. Valle, Hernán Vargas, P. Piedrahita, Laia Muñoz-Abril, J. Alava

{"title":"Threats and Vision for the Conservation of Galápagos Birds","authors":"G. Jiménez-Uzcátegui, D. Wiedenfeld, C. Valle, Hernán Vargas, P. Piedrahita, Laia Muñoz-Abril, J. Alava","doi":"10.2174/1874453201912010001","DOIUrl":"https://doi.org/10.2174/1874453201912010001","url":null,"abstract":"Threats that affect the avian diversity on the Galápagos Islands are increasing. We evaluated threats such as climate change and severe weather, human intrusions and disturbance, biological resource use, invasive and other problematic species, genes and diseases, pollution, geological events and loss of genetic diversity in relation with avian species enlisted in both the international and national (Ecuador) IUCN Red List, which can be used as sentinel species of the ecosystem. Here, the status of the threatened species for the next ten years (present time up to 2028), under two scenarios, including thestatus quoand theavian diversity visionfor the species’ conservation, was assessed.The conceptual framework of the assessment was envisioned within the existing knowledge and projections of present and future threats to revisit current conservation efforts. Based on this evaluation, a set of management actions coupled with mitigation strategies to address new anthropogenic threats affecting the long-term survival of species in the face of global and regional environmental changes are recommended. Alternative strategies for species conservation, mainly when declining avian populations are susceptible to demographic bottlenecks or risk of extinction and when natural disasters affect ecosystem stability, are also considered.These results should be envisioned as a guide for the evaluation and management of the avian species in the future to be replicated every decade.","PeriodicalId":39058,"journal":{"name":"Open Ornithology Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42233125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Different Messages are Transmitted by Individual Duet Contributions and Complete Duets in a Species with Highly Overlapped Duets 在高度重叠的物种中，不同的信息通过个体的二重唱贡献和完整的二重唱传递

Open Ornithology Journal Pub Date : 2018-11-22 DOI: 10.2174/1874453201811010056

L. Sandoval, Roselvy Juárez, Mauricio Villarreal

{"title":"Different Messages are Transmitted by Individual Duet Contributions and Complete Duets in a Species with Highly Overlapped Duets","authors":"L. Sandoval, Roselvy Juárez, Mauricio Villarreal","doi":"10.2174/1874453201811010056","DOIUrl":"https://doi.org/10.2174/1874453201811010056","url":null,"abstract":"\u0000 \u0000 Duet function hypotheses have been mostly studied in bird species that produce duets with male and female solo songs. However, in order to understand if patterns of duet function are similar across all duetting species, it is highly necessary to test the duet function hypotheses in species that produce duets with vocalizations other than solo songs.\u0000 \u0000 \u0000 \u0000 We studied the responses of territorial pairs to each sex’s individual duet contribution and complete duets in a species that produces duets with a vocalization other than male and female solo songs.\u0000 \u0000 \u0000 \u0000 We conducted a playback experiment where we presented duet contributions of each sex to three populations of White-eared Ground-sparrows (Melozone leucotis) in Costa Rica, during this species’ breeding season in 2016.\u0000 \u0000 \u0000 \u0000 The responses to complete duets were stronger than those to each sex’s duet contribution, suggesting that complete duets and each sex’s duet contribution have different functions. Complete duets are used to protect resources from intruders (supporting the resource defense hypothesis), and to prevent the partner from being usurped by intruders (supporting the mate-guarding hypothesis). Males used solo songs in response to female duet contributions, and this may work to attract intruder females (increasing the probability of extra-pair copulation). Males also use solo songs in response to male duet contributions, which may work as a signal to repel intruder males and guard their female. In this case, where mate attraction occurs with a completely different type of vocalization than used for duetting, we found a clear pattern of a double agenda for males when a territorial intrusion occurs.\u0000 \u0000 \u0000 \u0000 This study provides strong support for the dual function hypothesis in duets and reveals conflicting selective pressures between pair members relative to each hypothesis.\u0000","PeriodicalId":39058,"journal":{"name":"Open Ornithology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48823276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Recruitment Rates, Natal and Breeding Dispersal of Montagu’s Harriers (Circus Pygargus) by Means of Microsatellite Analysis 应用微卫星分析蒙塔古鹞（Circus Pygargus）的招募率、纳塔尔和繁殖扩散

Open Ornithology Journal Pub Date : 2018-11-22 DOI: 10.2174/1874453201811010039

Susann Janowski, Claudia Pürckhauer, R. Krüger, D. Tietze, M. Wink

{"title":"Recruitment Rates, Natal and Breeding Dispersal of Montagu’s Harriers (Circus Pygargus) by Means of Microsatellite Analysis","authors":"Susann Janowski, Claudia Pürckhauer, R. Krüger, D. Tietze, M. Wink","doi":"10.2174/1874453201811010039","DOIUrl":"https://doi.org/10.2174/1874453201811010039","url":null,"abstract":"Adult philopatry as well as juvenile dispersal and recruitment rates are key factors for population development. We investigated these questions for the first time in an increasing German population of Montagu’s harrier in Frankonia using microsatellite markers.By means of 16 loci, we genotyped 2265 samples from juvenile and adult female Montagu’s harriers. Parentage and identity tests were used to reconstruct life histories of birds for a 10 year period. Most of the birds were breeding in one or two years. The longest life history was eight years.Adult philopatry was quite high and differed significantly between sexes. We found 73.5% of females to breed < 5 km around the previous nest site (80.4% < 10 km, median nesting distance 2.1 km). All investigated males (n=18) were breeding in a distance of < 5 km (median nesting distance 1.3 km) to the previous nest. Juveniles showed a low recruitment rate (females: 2.9%, males: 4.9%, together 4%). Median natal dispersal distance was 19.1 km for females and 12.3 km for males. We found 29.4% of females and 41.2% of males to be philopatric, as the distance between hatching and first breeding site was < 10 km. Philopatry results mostly agree with data from other European countries.Due to strict marker and data selection we received high quality life histories of Montagu’s harriers, which demonstrate that microsatellite analyses are valuable tools in ornithology.Nevertheless, comparison of philopatry and recruitment rates depend directly on the scale used and investigation method and therefore remain a challenge.","PeriodicalId":39058,"journal":{"name":"Open Ornithology Journal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48224105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Painted Redstarts (Myioborus Pictus) Attack Larger Prey when Using Flush-Pursue Strategy 彩绘红启动（Myioborus Pictus）在使用同花顺追击策略时攻击更大的猎物

Open Ornithology Journal Pub Date : 2018-03-19 DOI: 10.2174/1874453201811010034

P. Jablonski, Sang-im Lee

引用次数: 0

Cretaceous Reverie: Review of Birds of Stone: Chinese Avian Fossils from the Age of Dinosaurs by Luis M. Chiappe and Meng Qingjin1 《白垩纪的幻想:石鸟的回顾:恐龙时代的中国鸟类化石》作者:Luis M. Chiappe和孟Qingjin1

Open Ornithology Journal Pub Date : 2018-02-12 DOI: 10.2174/1874453201811010027

A. Feduccia

引用次数: 1

Evidence for a Relationship Between the Movements of the Common Redpoll (Acanthis flammea) and the American Goldfinch (Spinus tristis) 红雀（Acanthis flammea）和美国金翅雀（Spinus tristis）运动之间关系的证据

Open Ornithology Journal Pub Date : 2018-01-31 DOI: 10.2174/1874453201811010001

P. Dougherty, W. Wilson

{"title":"Evidence for a Relationship Between the Movements of the Common Redpoll (Acanthis flammea) and the American Goldfinch (Spinus tristis)","authors":"P. Dougherty, W. Wilson","doi":"10.2174/1874453201811010001","DOIUrl":"https://doi.org/10.2174/1874453201811010001","url":null,"abstract":"Results and Discussion: Historic data indicate that east of the Rocky Mountains, both species overwinter in relatively even numbers across latitudes. In contrast, we found few significant positive correlations between the winter records of each species in different areas along the same longitude. We attribute these patterns to the fact that resource levels and environmental conditions tend to be similar across latitudes. While previous studies of historic data have identified a biennial pattern in the migration of the Common Redpoll, we found evidence that populations of American Goldfinches breeding in the northern parts of the species’ range similarly display significant southward movements every other year. Because these two species breed at different latitudes and show large-scale southward movements during the same years, areas across southern Canada and the northern United States alternate between having high winter abundances of Common Redpolls and American Goldfinches. We propose that these alternations are caused by a shared response to cyclical seed crop failure across the northern regions of North America.","PeriodicalId":39058,"journal":{"name":"Open Ornithology Journal","volume":"11 1","pages":"1-26"},"PeriodicalIF":0.0,"publicationDate":"2018-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47635533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0