Journal of Raptor Research最新文献

{"title":"Ectoparasitism and Energy Infrastructure Limit Survival of Preadult Golden Eagles in the Southern Great Plains","authors":"Robert K. Murphy, B. Millsap, D. Stahlecker, C. Boal, Brian W. Smith, Shea D. Mullican, Corrie C. Borgman","doi":"10.3356/JRR-21-72","DOIUrl":"https://doi.org/10.3356/JRR-21-72","url":null,"abstract":"ABSTRACT. Much of the US Southern Great Plains (SGP) continues to undergo intensive energy development that could affect the region's Golden Eagles (Aquila chrysaetos), yet the species' population status there is unknown. During 2011–2020, we used satellite telemetry to assess annual survival rates and causes of mortality among 40 preadult (<3 yr of age) Golden Eagles in the SGP; 29 were monitored beginning at the late nestling stage and 11 immigrated into the SGP from western regions. For comparison we monitored 15 preadult Golden Eagles from nests in the Central Great Plains (CGP), where energy development was less extensive. We estimated survival rates by using a multi-state model in a Bayesian framework that accounted for probabilities of causes of death. Mean annual survival in the SGP during the preadult period was 0.060, versus 0.512 in the CGP and ∼0.7–0.9 reported elsewhere in the coterminous western USA. Mexican chicken bugs (Haematosiphon inodorus) were implicated in deaths of at least seven Golden Eagles during the ∼2-wk late nestling stage and in two deaths <3 mo after fledging. Energy infrastructure especially electrocutions accounted for 12 (57.1%) of 21 deaths of post-fledged preadults. Seven of 11 immigrant eagles died. Overall, probabilities of death of a Golden Eagle during the preadult period in the SGP due to Mexican chicken bugs and to electrocution were both 0.345. We estimated that the SGP population may be declining 9% annually due to poor recruitment; mitigation of underlying factors should be a priority for managing Golden Eagles in the western USA. RESUMEN. Buena parte de las Grandes Llanuras del Sur (GLS) de EEUU continúan sometidas a un desarrollo energético intensivo que podría afectar a los individuos de Aquila chrysaetos de la región; sin embargo, el estado de la población de la especie en esta zona es desconocido. Durante 2011–2020, usamos telemetría satelital para evaluar las tasas de supervivencia anuales y las causas de mortalidad entre 40 águilas preadultas (<3 años de edad) de A. chrysaetos en las GLS; 29 fueron monitoreadas a partir de la etapa tardía de polluelo y 11 inmigraron desde regiones del oeste. Para hacer una comparación, monitoreamos 15 águilas preadultas de A. chrysaetos en nidos de las Grandes Llanuras Centrales (GLC), donde el desarrollo energético era menos extenso. Estimamos las tasas de supervivencia utilizando un modelo multi-estado en un marco de trabajo bayesiano que tuvo en cuenta las probabilidades de las causas de muerte. La supervivencia media anual en las GLS durante el periodo preadulto fue de 0.060, en comparación con 0.512 en las GLC y ∼0.7–0.9 en otras partes del oeste contiguo de EEUU. La chinche Haematosiphon inodorus estuvo implicada en la muerte de al menos siete águilas durante las últimas ∼2 semanas de la etapa tardía de polluelo y en dos muertes durante el inicio del postemplumamiento. La infraestructura energética, especialmente las electrocuciones, representaron 12 (57.","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"68 2","pages":"505 - 521"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153173","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}

{"title":"Breeding Dispersion of Raptors in the Junggar Basin, Xinjiang, China, Including a Case of Close Nesting of Saker Falcons and Golden Eagles","authors":"I. Angelov, R. Maming, Andrew Dixon","doi":"10.3356/JRR-22-00086","DOIUrl":"https://doi.org/10.3356/JRR-22-00086","url":null,"abstract":"","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"69 2","pages":"676 - 679"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153156","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}

{"title":"Rapid Urbanization Alters Overwintering Abundance and Sex Ratio of the American Kestrel","authors":"Mercy Melo, Kirsten Fuller, Sue Robertson, B. Robertson, Laurie J. Goodrich, David King, J. Therrien","doi":"10.3356/JRR-22-00107","DOIUrl":"https://doi.org/10.3356/JRR-22-00107","url":null,"abstract":"ABSTRACT. Urbanization increasingly causes alterations in prey diversity and abundance, land cover, and human disturbance, subsequently impacting populations of even the most adaptable species. American Kestrels are currently considered urban adapters, which may be veiling the influence of urbanization on their continental population decline. We quantified overwintering abundance and sex ratios of American Kestrels throughout the past three decades in a rapidly developing region of the species' wintering range in southeast Florida to study spatial and temporal population trends relative to degree of urbanization. We detected a significant negative correlation between annual building density and kestrel abundance. Sex ratios also significantly shifted from predominantly female to predominantly male over time and in association with increased residential development. This trend suggests that developed landscapes may represent lower quality territories, as females typically occupy better quality overwintering habitat than males. These results suggest that urbanization may negatively impact overwintering American Kestrel populations in this region and should be investigated as a possible factor contributing to the overall continental population decline, particularly in the eastern flyway where urbanization is prevalent. RESUMEN. La urbanización causa cada vez más alteraciones en la diversidad y abundancia de presas, la cobertura del suelo y la perturbación humana, impactando posteriormente en las poblaciones incluso de las especies más adaptables. Falco sparverius es considerada actualmente como una especie adaptada a los ambientes urbanos, lo que podría estar enmascarando la influencia de la urbanización en su declive poblacional continental. Para estudiar las tendencias poblacionales espaciales y temporales en relación con el grado de urbanización, cuantificamos la abundancia invernal y las proporciones de sexos de F. sparverius a lo largo de las últimas tres décadas en una región de rápido desarrollo urbano dentro del área de invernada de la especie en el sureste de Florida. Detectamos una correlación negativa significativa entre la densidad anual de edificios y la abundancia de individuos de F. sparverius. Con el tiempo, la proporción de sexos también cambió significativamente, desde un predominio de hembras a un predominio de machos, en relación con un mayor desarrollo residencial. Esta tendencia sugiere que los paisajes urbanizados pueden representar territorios de menor calidad, ya que las hembras suelen ocupar hábitats de invernada de mejor calidad que los machos. Estos resultados sugieren que la urbanización podría afectar negativamente a las poblaciones invernantes de F. sparverius en esta región y se debería investigar como un posible factor que contribuye al declive poblacional continental general, especialmente en la ruta migratoria oriental donde la urbanización es prevalente. [Traducción del equipo editorial]","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"69 4","pages":"571 - 580"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154351","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}

{"title":"Breeding Bald Eagle (Haliaeetus leucocephalus) Population and Demographic Trends in Florida, 1972–2017","authors":"Jared Zimmerman, Janell M. Brush, Meaghan N. Evans, Kristin Rogers, Stephen A. Nesbitt, Erin Leone, W. A. Cox, Michelle van Deventer, Craig A. Faulhaber","doi":"10.3356/JRR-22-00114","DOIUrl":"https://doi.org/10.3356/JRR-22-00114","url":null,"abstract":"ABSTRACT. The range-wide recovery of Bald Eagles (Haliaeetus leucocephalus) is one of the great North American conservation successes, with the Bald Eagle population in Florida contributing substantially to this recovery. Florida has one of the densest concentrations of nesting Bald Eagles in the lower 48 states and sustained a population monitoring program that spanned 45 yr. We used nest monitoring data from 1972–2017 to quantify changes in the size, extent, and productivity of the breeding Bald Eagle population in Florida. We documented an increase in the number of occupied Bald Eagle territories from 88 in 1973 to an estimated 1565 in 2017, with nests recorded in 64 of Florida's 67 counties by the end of the monitoring efforts. Mean annual growth rate in the number of occupied eagle territories in Florida was 5.5 ± 1.1% (SE). High reproductive rates, exemplified by a mean productivity of 1.13 ± 0.02 fledglings per occupied nest, a mean brood size of 1.54 ± 0.01 fledglings per successful nest, and the production of nearly 40,000 fledglings over a 45-yr period, translated into substantial gains for the state and southeastern US Bald Eagle population. Eagles have established a large, spatially expansive, and productive breeding population in Florida, one that exceeded the conservation objectives established when the species was state-delisted in 2008. These data provided key insights into the breeding ecology, recovery, and long-term stability of Bald Eagles in Florida. Given the predicted increase in the human population and landscape modification anticipated in the coming years, the conservation of the eagle population within Florida will require adaptive management strategies.","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"3 10","pages":"640 - 652"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154543","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}

{"title":"Book Review: Raptors of Texas: A Natural History of Diurnal Birds of Prey","authors":"Myrthe Van Brempt, Geoffrey L. Holroyd","doi":"10.3356/JRR-57-4-Book-Review-2","DOIUrl":"https://doi.org/10.3356/JRR-57-4-Book-Review-2","url":null,"abstract":"","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"32 126","pages":"683 - 685"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154567","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}

{"title":"Winter Distribution of Golden Eagles in the Eastern USA","authors":"T. Miller, Michael Lanzone, Melissa A. Braham, A. Duerr, J. Cooper, S. Somershoe, David Hanni, Eric C. Soehren, Carrie Threadgill, Mercedes Maddox, Jonathan Stober, Christine Kelly, Tom Salo, Andrew Berry, Mark Martell, Scott Mehus, Brian Dirks, Robert Sargent, Todd E. Katzner","doi":"10.3356/JRR-23-00012","DOIUrl":"https://doi.org/10.3356/JRR-23-00012","url":null,"abstract":"ABSTRACT. Golden Eagles (Aquila chrysaetos) have a Holarctic distribution, but some details of that overall distribution are poorly understood, including parts of the range in eastern North America. Recent studies in the region suggest that Golden Eagles may be more widely distributed than previously recognized. For species specific conservation efforts to be effective, an understanding of the distribution of the species is essential. Thus, the goal of this study was to map the winter distribution of Golden Eagles in the eastern half of the USA. To accomplish this, we reviewed and compiled 11,981 Golden Eagle records from eight data sources, including literature and ornithology records, community science data, survey data, and telemetry data. We found that Golden Eagles were observed in winter in each of the 31 states that lie completely east of the 100th meridian and in 1244 of the 2045 counties (61%) in those states. The proportion of counties with records varied by physiographic province, with higher proportions in physiographic provinces with more rugged terrain and greater forest cover. Our study shows that Golden Eagles are more widely distributed during winter in eastern USA states than was previously recognized. This work provides an important foundation for future management and research at a time when threats to this species are expanding rapidly on the landscape. RESUMEN. Si bien Aquila chrysaetos tiene una distribución holártica, algunos aspectos de su distribución en el este de América del Norte no son del todo claros. Estudios recientes en la región sugieren que su distribución puede ser más amplia que la distribución previamente reconocida. Para que los esfuerzos de conservación para una especie en particular sean efectivos, es esencial comprender su distribución. Así, el objetivo de este estudio fue elaborar un mapa de la distribución invernal de A. chrysaetos en la mitad oriental de EEUU. Para esto, revisamos y compilamos 11,981 registros de A. chrysaetos provenientes de ocho fuentes de datos, incluyendo literatura y registros ornitológicos, datos de ciencia comunitaria, datos de censos y datos de telemetría. Encontramos que A. chrysaetos fue observada en invierno en cada uno de los 31 estados que se encuentran completamente al este del meridiano 100 y en 1244 de los 2045 condados (61%) de estos estados. La proporción de condados con registros varió según la provincia fisiográfica, con proporciones más altas en provincias fisiográficas con terreno más accidentado y mayor cobertura forestal. Nuestro estudio muestra que la distribución de A. chrysaetos durante el invierno en los estados del este de EEUU es efectivamente más amplia que la previamente reconocida. Este trabajo proporciona una base importante para la gestión e investigación futura en un momento en que las amenazas para esta especie se están expandiendo rápidamente en el paisaje. [Traducción del equipo editorial]","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"176 1‐2","pages":"522 - 532"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139152947","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}

{"title":"Wildlife Camera Monitoring Revealed the Northern Goshawk as a Predator on Gyrfalcon Nestlings","authors":"Børje C. Moen, R. T. Kroglund, J. E. Østnes, Erlend B. Nilsen, T. Nygård","doi":"10.3356/JRR-23-00007","DOIUrl":"https://doi.org/10.3356/JRR-23-00007","url":null,"abstract":"","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"11 1","pages":"671 - 675"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153489","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}

{"title":"Journal of Raptor Research Information for Contributors","authors":"","doi":"10.3356/JRR-23501","DOIUrl":"https://doi.org/10.3356/JRR-23501","url":null,"abstract":"","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"9 4","pages":"690 - 693"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139154676","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}

{"title":"Book Review: Aves de Rapina Do Brasil: Volume I – Diurnos","authors":"Jennifer O. Coulson, Everton B. P. Miranda","doi":"10.3356/JRR-57-4-Book-Review-1","DOIUrl":"https://doi.org/10.3356/JRR-57-4-Book-Review-1","url":null,"abstract":"","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"8 1","pages":"686 - 689"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153464","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}

{"title":"Post-Hatch Egg Laying by American Black Vultures (Coragyps atratus)","authors":"Philip W. Kavouriaris, Andrea K. Darracq, Matthew T. Springer","doi":"10.3356/JRR-23-00018","DOIUrl":"https://doi.org/10.3356/JRR-23-00018","url":null,"abstract":"","PeriodicalId":16927,"journal":{"name":"Journal of Raptor Research","volume":"68 2","pages":"680 - 682"},"PeriodicalIF":1.7,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139153578","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}