Mercury Speciation in Scottish Raptors Reveals Potential Uptake or Formation of Mercury Selenide Nanoparticles in Scottish Golden Eagles (Aquila Chrysaetos)

2021 ◽  
Author(s):  
Shaun T. Lancaster ◽  
Gabriela Peniche ◽  
Ali Alzahrani ◽  
Magdalena Blanz ◽  
Jason Newton ◽  
...  
Keyword(s):  
Mercury Speciation ◽  
Aquila Chrysaetos ◽  
Golden Eagles ◽  
Mercury Selenide

scholarly journals Status of the Golden Eagle Aquila chrysaetos in Europe

1992 ◽  
Vol 2 (3) ◽  
pp. 175-183 ◽  
Author(s):  
J. Watson
Keyword(s):  
European Population ◽  
Conservation Priorities ◽  
Published Data ◽  
Southeast Europe ◽  
Aquila Chrysaetos ◽  
Baltic Countries ◽  
Golden Eagles ◽  
Biogeographic Regions ◽  
National Boundaries ◽  
Available Information

SummaryPopulation estimates (number of breeding pairs) of Golden Eagles Aquila chrysaetos are given for most countries in Europe based on recent published accounts. Where published data are not available information is from local raptor specialists. The “best estimate” of the contemporary European population is 5,600 pairs ± 5%. The largest numbers are in Spain (c. 1,200 pairs) with Norway, European Russia, Scotland and Sweden each holding over 300 pairs. Information on trends reveals that most substantial populations (> 200 pairs) are stable; decreases are reported from some Baltic countries and in parts of southeast Europe. The total population is also shown for five biogeographic regions across Europe. In some cases, such “regions” may be more appropriate for the formulation of conservation priorities and policies than are the biologically artificial units defined by national boundaries.Des estimations des populations (nombre de couples nicheurs) d'Aigles royaux basées sur des publications récentes sont présentées pour la plupart des pays d'Europe. Là où les publications font défaut, des informations ont été requises apurès de spécialistes locaux. La population européene actuelle est estimée à 5,600 couples ± 5%. Les populations les plus fortes, soit plus de 300 couples, se trouvent en Espagne (env. 1,200 couples), Norvege, Russie européene, Ecosse et Suède. Les informations sur les tendances des fluctuations indiquent que la plupart des grandes populations (plus de 200 couples) sont stables; un déclin a été constaté chez certaines populations de l'est de la Baltique et du sudest de l'Europe. La population totale est aussi indiquée pour cinq régions biogéographiques qui peuvent s'avérer plus adéquates que les pays avec leurs frontières artifi-cielles pour la formulation de priorités et d'une politique pour la conservation de l'espèce.

The auditory attributes of Golden Eagles: Do Golden (Aquila chrysaetos) and Bald Eagles (Haliaeetus leucocephalus) share the same auditory space?

2018 ◽  
Vol 144 (3) ◽  
pp. 1742-1742
Author(s):  
Edward J. Walsh ◽  
Peggy B. Nelson ◽  
Julia Ponder ◽  
Christopher Milliren ◽  
Christopher Feist ◽  
...  
Keyword(s):  
Haliaeetus Leucocephalus ◽  
Aquila Chrysaetos ◽  
Bald Eagles ◽  
Auditory Space ◽  
Golden Eagles

The frequency distribution of lead concentration in feathers, blood, bone, kidney and liver of golden eagles Aquila chrysaetos: insights into the modes of uptake

2015 ◽  
Vol 156 (4) ◽  
pp. 1095-1103 ◽  
Author(s):  
Lukas Jenni ◽  
Milena M. Madry ◽  
Thomas Kraemer ◽  
Jacqueline Kupper ◽  
Hanspeter Naegeli ◽  
...  
Keyword(s):  
Frequency Distribution ◽  
Lead Concentration ◽  
Aquila Chrysaetos ◽  
Golden Eagles

scholarly journals Summer and winter space use and home range characteristics of Golden Eagles (Aquila chrysaetos) in eastern North America

The Condor ◽  
2017 ◽  
Vol 119 (4) ◽  
pp. 697-719 ◽  
Author(s):  
Tricia A. Miller ◽  
Robert P. Brooks ◽  
Michael J. Lanzone ◽  
Jeff Cooper ◽  
Kieran O'Malley ◽  
...  
Keyword(s):  
North America ◽  
Home Range ◽  
Space Use ◽  
Eastern North America ◽  
Aquila Chrysaetos ◽  
Golden Eagles

Nesting Season Diet of Golden Eagles (Aquila chrysaetos) in Western Iran

2015 ◽  
Vol 49 (3) ◽  
pp. 303 ◽  
Author(s):  
Arya Shafaeipour
Keyword(s):  
Aquila Chrysaetos ◽  
Western Iran ◽  
Golden Eagles ◽  
Nesting Season

scholarly journals Biotelemetry data for golden eagles (Aquila chrysaetos) captured in coastal southern California, November 2014–February 2016

Data Series ◽  
10.3133/ds994 ◽  
2016 ◽  
Author(s):  
Jeff A. Tracey ◽  
Melanie C. Madden ◽  
Jeremy B. Sebes ◽  
Peter H. Bloom ◽  
Todd E. Katzner ◽  
...  
Keyword(s):  
Southern California ◽  
Aquila Chrysaetos ◽  
Golden Eagles

scholarly journals Use of two distant nesting areas as a breeding strategy of Golden Eagles (Aquila chrysaetos) in Valdres, southeast Norway

2021 ◽  
Vol 44 ◽  
pp. 12-18
Author(s):  
Henning Dunker
Keyword(s):  
Picea Abies ◽  
Breeding Strategy ◽  
The Other ◽  
Golden Eagle ◽  
Aquila Chrysaetos ◽  
Golden Eagles ◽  
Air Space

Sixteen occupied nesting territories of Golden Eagle Aquila chrysaetos were studied between 2000 and 2020, in the southern part of the valley of Valdres, southeast Norway. Most of the study area consists of rolling hills dominated by spruce Picea abies with numerous clear-cuts. It was concluded that at least six (about 40%) of the eagle pairs in these territories move back and forth between two alternate, distant nesting areas 5.3 km apart (average). In two additional pairs, a second nesting area was considered possible. In the remaining eight, only one nesting area was found. The periods of one nesting area in use varied from 2–19 years, before moving to the other nesting area. This result was supported by panoramic mid-day surveillance of the air space between the two nesting areas during 2014–2020. The maintenance of a second core nesting area is most likely a strategy for moving to a more favourable hunting area and might be initiated by a new mate in the pair. The move might also be influenced by avoidance of a close neighbouring pair. A switch of nesting areas, as indicated by this study, could significantly affect results, when the number of eagle pairs in a certain area is counted.   Cover photo: Golden eagle. Photo: Frode Falkenberg.

scholarly journals Disparities Between Results and Conclusions: Do Golden Eagles Warrant Special Concern Based on Migration Counts in the Western United States?

The Condor ◽  
2005 ◽  
Vol 107 (2) ◽  
pp. 469-473
Author(s):  
Brian J. McCaffery ◽  
Carol McIntyre
Keyword(s):  
Population Change ◽  
Population Cycles ◽  
Small Sample ◽  
Population Declines ◽  
Aquila Chrysaetos ◽  
Specific Population ◽  
Clear Cut ◽  
Golden Eagles ◽  
The Status ◽  
Special Concern

Abstract A recent summary of raptor migration count data concluded that the status of Golden Eagles (Aquila chrysaetos) in western North America warranted concern (Hoffman and Smith 2003). Our analysis of these data did not lead us to the same conclusion. We have three specific concerns. First, the regional characterizations of eagle migration in Hoffman and Smith (2003) are based on a very small sample of sites. Therefore, we recommend that these characterizations be considered as hypothetical in nature. Second, we suggest that the population cycles and patterns of age-specific population change described by Hoffman and Smith (2003) are neither as general nor as clear-cut as they indicated. Finally, although the authors expressed concern about the status of Golden Eagles based upon both their findings and data from other sources, we did not find compelling evidence for population declines in our inspection of those same data. Disparidad entre Resultados y Conclusiones: ¿Es el Estatus de Aquila chrysaetos Especialmente Preocupante de Acuerdo a los Conteos Migratorios del Oeste de los Estados Unidos? Resumen. Un resumen de los datos de conteos de migración de rapaces realizado recientemente concluyó que el estatus de Aquila chrysaetos en el oeste de Norte América es preocupante (Hoffman y Smith 2003). Nuestro análisis de los mismos datos no nos llevó a la misma conclusión, y tenemos tres inquietudes específicas. Primero, las caracterizaciones regionales de la migración de las águilas en Hoffman y Smith (2003) están basadas en una muestra de sitios muy pequeña. Por tanto, recomendamos que dichas caracterizaciones se consideren hipotéticas. Segundo, sugerimos que los ciclos poblacionales y los patrones de cambio poblacional edad-específicos descritos por Hoffman y Smith (2003) no son tan generales ni tan claros como ellos lo indicaron. Finalente, aunque los autores se manifestaron preocupados por el estatus de A. chrysaetos basándose en sus hallazgos y en datos de otras fuentes, al inspeccionar los mismos datos nosotros no encontramos evidencia contundente de que existan tales disminuciones poblacionales.

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