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Outstanding Challenges in the Transferability of Ecological Models.
High juvenile mortality during migration in a declining population of a long-distance migratory raptor
Many populations of long-distance migrants are declining and there is increasing evidence that declines may be caused by factors operating outside the breeding season. Among the four vulture species
Eradication of Invasive Mammals on Islands Inhabited by Humans and Domestic Animals
TLDR
The challenges associated with campaigns to eradicate invasive mammals from islands inhabited by humans and domestic animals are reviewed and a close collaboration between island communities, managers, and social scientists is recommended to increase the probability of achieving and maintaining an island permanently free of invasive mammals.
Unstructured citizen science data fail to detect long‐term population declines of common birds in Denmark
Long‐term monitoring of biodiversity is necessary to identify population declines and to develop conservation management. Because long‐term monitoring is labour‐intensive, resources to implement
Estimating population size of a nocturnal burrow-nesting seabird using acoustic monitoring and habitat mapping
TLDR
The strong positive relationship that is found between local nest density and recorded calling rate indicates that passive acoustic monitoring may be useful to document relative changes in seabird populations over time.
Persistent electrocution mortality of Egyptian Vultures Neophron percnopterus over 28 years in East Africa
Summary Electrocution on poorly designed power poles is increasingly shown to pose a threat for the populations of many large raptors. Here we document that a power line in Sudan continues to cause
Invasive mammal eradication on islands results in substantial conservation gains
TLDR
The global benefits of an increasingly used conservation action to stem biodiversity loss: eradication of invasive mammals on islands are estimated to be 107 highly threatened birds, mammals, and reptiles on the IUCN Red List—6% of all these highly threatened species—likely have benefitted from invasive mammal eradications on islands.
Global population collapse in a superabundant migratory bird and illegal trapping in China
TLDR
The magnitude and speed of the decline of the Yellow-breasted Bunting is unprecedented among birds with a comparable range size, with the exception of the Passenger Pigeon, which went extinct in 1914 due to industrial-scale hunting.
Effects of Lipid Extraction on Stable Isotope Ratios in Avian Egg Yolk: Is Arithmetic Correction a Reliable Alternative?
TLDR
Arithmetic lipid correction provided accurate values for lipid-extracted &dgr;13C in captive Spectacled Eiders fed on a homogeneous high-quality diet, however, arithmetic lipid correction was unreliable for wild King Eiders, likely because of their differential incorporation of macronutrients from isotopically distinct environments during migration.
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