Known Breeding Distribution and Abundance of Golden Eagles in Eastern North America

2015 ◽  
Vol 22 (2) ◽  
pp. 236-247 ◽  
Author(s):  
François Morneau ◽  
Junior A. Tremblay ◽  
Charles Todd ◽  
Tony E. Chubbs ◽  
Charles Maisonneuve ◽  
...  
Keyword(s):  
North America ◽  
Eastern North America ◽  
Golden Eagles ◽  
Breeding Distribution

scholarly journals Tracking multi-generational colonization of the breeding grounds by monarch butterflies in eastern North America

2013 ◽  
Vol 280 (1768) ◽  
pp. 20131087 ◽  
Author(s):  
D. T. Tyler Flockhart ◽  
Leonard I. Wassenaar ◽  
Tara G. Martin ◽  
Keith A. Hobson ◽  
Michael B. Wunder ◽  
...  
Keyword(s):  
North America ◽  
Danaus Plexippus ◽  
Late Summer ◽  
Breeding Habitat ◽  
Eastern North America ◽  
Distribution Models ◽  
Monarch Butterflies ◽  
Breeding Distribution ◽  
Breeding Grounds ◽  
Isotope Measurements

Insect migration may involve movements over multiple breeding generations at continental scales, resulting in formidable challenges to their conservation and management. Using distribution models generated from citizen scientist occurrence data and stable-carbon and -hydrogen isotope measurements, we tracked multi-generational colonization of the breeding grounds of monarch butterflies ( Danaus plexippus ) in eastern North America. We found that monarch breeding occurrence was best modelled with geographical and climatic variables resulting in an annual breeding distribution of greater than 12 million km 2 that encompassed 99% occurrence probability. Combining occurrence models with stable isotope measurements to estimate natal origin, we show that butterflies which overwintered in Mexico came from a wide breeding distribution, including southern portions of the range. There was a clear northward progression of monarchs over successive generations from May until August when reproductive butterflies began to change direction and moved south. Fifth-generation individuals breeding in Texas in the late summer/autumn tended to originate from northern breeding areas rather than regions further south. Although the Midwest was the most productive area during the breeding season, monarchs that re-colonized the Midwest were produced largely in Texas, suggesting that conserving breeding habitat in the Midwest alone is insufficient to ensure long-term persistence of the monarch butterfly population in eastern North America.

scholarly journals Stable hydrogen isotopes identify leapfrog migration, degree of connectivity, and summer distribution of Golden Eagles in eastern North America

The Condor ◽  
2015 ◽  
Vol 117 (3) ◽  
pp. 414-429 ◽  
Author(s):  
David M. Nelson ◽  
Melissa Braham ◽  
Tricia A. Miller ◽  
Adam E. Duerr ◽  
Jeff Cooper ◽  
...  
Keyword(s):  
North America ◽  
Hydrogen Isotopes ◽  
Eastern North America ◽  
Golden Eagles ◽  
Summer Distribution

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

scholarly journals Spatial and temporal patterns in age structure of Golden Eagles wintering in eastern North America

2020 ◽  
Vol 91 (1) ◽  
pp. 92-101
Author(s):  
Macy L. Kenney ◽  
James R. Belthoff ◽  
Matthew Carling ◽  
Tricia A. Miller ◽  
Todd E. Katzner
Keyword(s):  
North America ◽  
Age Structure ◽  
Temporal Patterns ◽  
Eastern North America ◽  
Spatial And Temporal Patterns ◽  
Golden Eagles

Roost- and perch-site selection by Golden Eagles (Aquila chrysaetos) in eastern North America

10.1676/18-38 ◽  
2019 ◽  
Vol 131 (2) ◽  
pp. 310 ◽  
Author(s):  
Adam E. Duerr ◽  
Melissa A. Braham ◽  
Tricia A. Miller ◽  
Jeffery Cooper ◽  
James T. Anderson ◽  
...  
Keyword(s):  
North America ◽  
Site Selection ◽  
Eastern North America ◽  
Aquila Chrysaetos ◽  
Golden Eagles

The Identification and Study of Indian Shell Middens in Eastern North America: 1643–1861

1986 ◽  
Vol 6 (3) ◽  
pp. 227-243 ◽  
Author(s):  
Andrew L. Christenson
Keyword(s):  
Nineteenth Century ◽  
Civil War ◽  
North America ◽  
East Coast ◽  
Eastern North America ◽  
Shell Midden ◽  
Shell Middens ◽  
Work Done

Although the interest in shell middens in North America is often traced to reports of the discoveries in Danish kjoekkenmoeddings in the mid-nineteenth century, extensive shell midden studies were already occurring on the East Coast by that time. This article reviews selected examples of this early work done by geologists and naturalists, which served as a foundation for shell midden studies by archaeologists after the Civil War.

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