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[T40cfr403]

A Review of Options for Mitigating Take of Golden Eagles at Wind Energy Facilities

http://www.bioone.org/doi/abs/10.3356/JRR-16-76.1?af=R

"Because estimates of Golden Eagle fatalities at many wind energy projects are low, research to evaluate mitigation measures needs to be coordinated and collaborative across multiple wind energy facilities to improve our ability to produce scientifically robust mitigation strategies."

[T40cfr403]

Does Hopi Religious Harvest of Eaglets Affect Golden Eagle Territory Occupancy and Reproduction on the Navajo Nation?

http://www.bioone.org/doi/abs/10.3356/JRR-16-61.1?af=R

"Territories in harvest and control areas produced similar numbers of nestlings early in the season; however, significantly fewer (53%) reached fledging age in the harvested area, suggesting collection of nestlings led to locally depressed fledgling production."

[T40cfr403]

Characterizing Golden Eagle Risk to Lead and Anticoagulant Rodenticide Exposure: A Review

http://www.bioone.org/doi/abs/10.3356/JRR-16-19.1?af=R

"Contaminant exposure is among the many threats to Golden Eagle (Aquila chrysaetos) populations throughout North America, particularly lead poisoning and anticoagulant rodenticides (AR)."

[T40cfr403]

No Substitute for Survival: Perturbation Analyses Using a Golden Eagle Population Model Reveal Limits to Managing for Take

http://www.bioone.org/doi/abs/10.3356/JRR-16-32.1?af=R

"Importantly, we found that the ability for increases in reproductive output to compensate for decreased survival was very limited. To maintain stable populations, declines in survival >4% required increases in productivity that generally exceed the evolutionary potential for Golden Eagles. Our findings support the current U.S. Fish and Wildlife conservation strategy which mitigates eagle "take" via efforts to reduce mortality elsewhere."

[T40cfr403]

Golden Eagles in a Changing World

http://www.bioone.org/doi/10.3356/0892-1016-51.3.193

"The goal of this collection of reports is to share the results of recent and newly emerging research on Golden Eagle populations, review human-caused mortality factors and approaches for managing their effects, and provide some guidance on how to better communicate results to other researchers and decision-makers."

[T40cfr403]

Exogenous and endogenous corticosterone in feathers (interesting)

http://onlinelibrary.wiley.com/doi/10.1111/jav.01274/abstract

[T40cfr403]

Effect of composition on shape of bird eggs

http://onlinelibrary.wiley.com/doi/10.1111/jav.01528/abstract

"Although significant, the models explained little of the variation in egg shape and so it was concluded that other factors, such as pelvis size and shape, could be more important in determining egg shape in birds."

[T40cfr403]

Clutch size in Chesapeake Bay bald eagles: an unexpected history

http://www.ccbbirds.org/2017/10/05/clutch-size-in-chesapeake-bay-bald-eagles-an-unexpected-history/


Three-egg bald eagle clutch along the upper Potomac River. The Chesapeake Bay appears to have the highest rate of three-egg clutches throughout the breeding range, likely reflecting the high productivity of the area. Photo by Bryan Watts.

"Amazingly, eagle egg collections from the Chesapeake included three four-egg clutches and two five-egg clutches."

[T40cfr403]

A tough year for Chesapeake osprey

http://www.ccbbirds.org/2017/10/06/a-tough-year-for-chesapeake-osprey/

"The breeding season had been a dismal failure for osprey in the Chesapeake Bay.  Not just in one location but in all locations that were under observation."


Telltale sign of food stress is a bald spot on the nape of a young chick where dominant young have pulled out feathers to reinforce the dominance hierarchy and to control access to food. This sign has been common throughout the Bay in recent years. Photo by Bryan Watts.

[T40cfr403]

Avian Evolution: The Fossil Record of Birds and Its Paleobiological Significance

http://www.bioone.org/doi/abs/10.1642/AUK-17-117.1

[T40cfr403]

The Most Perfect Thing: Inside (and Outside) a Bird's Egg

http://www.bioone.org/doi/abs/10.1642/AUK-17-112.1

[T40cfr403]

Long-term phenological shifts in migration and breeding-area residency in eastern North American raptors

http://www.bioone.org/doi/abs/10.1642/AUK-17-5.1

"Such an increase in time spent at northern latitudes in a large number of terrestrial avian predators over a wide geographic area may have profound impacts on population and ecosystem dynamics."

[T40cfr403]

Sex-specific differences in preen gland size of Zebra Finches during the course of breeding

http://www.bioone.org/doi/abs/10.1642/AUK-17-12.1

"Females reached a maximum gland size when the first chick hatched, whereas male gland size peaked earlier, when the first egg was laid."

[T40cfr403]

Effect of light-level geolocators on apparent survival of two highly aerial swift species

http://onlinelibrary.wiley.com/doi/10.1111/jav.01521/abstract

"...our results generally showed that equipping swifts with geolocators decreased their survival prospects..."

"We suggest that future studies tracking the movements of aerial insectivorous birds should use devices designed to minimize drag."

[T40cfr403]

Usutu virus is back: Not only in blackbirds but also in humans

https://www.sciencedaily.com/releases/2017/10/171013103319.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fplants_animals%2Fbirds+%28Birds+News+--+ScienceDaily%29