Anne N. M. A. Ausems
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View article: Sex-specific variation in breeding-ground departure decisions and detection rates during southbound migration in West Atlantic Flyway Whimbrels (Numenius phaeopus)
Sex-specific variation in breeding-ground departure decisions and detection rates during southbound migration in West Atlantic Flyway Whimbrels (Numenius phaeopus) Open
Understanding movement ecology of long-distance migrants is essential for effective conservation. We showed that West Atlantic Flyway Whimbrels (Numenius phaeopus) depart their breeding grounds at different times based on breeding latitude…
View article: Where have all the petrels gone? Forty years (1978–2020) of Wilson’s Storm Petrel (Oceanites oceanicus) population dynamics at King George Island (Isla 25 de Mayo, Antarctica) in a changing climate
Where have all the petrels gone? Forty years (1978–2020) of Wilson’s Storm Petrel (Oceanites oceanicus) population dynamics at King George Island (Isla 25 de Mayo, Antarctica) in a changing climate Open
Numerous seabird species are experiencing population declines, and this trend is expected to continue or even accelerate in the future. To understand the effects of environmental change on seabird populations, long-term studies are vital, …
View article: Consistent apparent adult survival and nest‐site fidelity of whimbrel <i>Numenius phaeopus</i> near Churchill, Manitoba, Canada over a 40 year period
Consistent apparent adult survival and nest‐site fidelity of whimbrel <i>Numenius phaeopus</i> near Churchill, Manitoba, Canada over a 40 year period Open
Reliable estimates of adult survival for many shorebird species are lacking. We used Cormack–Jolly–Seber (CJS) methods to provide an estimate of apparent, or local, survival (φ) of a population of whimbrels, Numenius phaeopus , breeding in…
View article: Birds of a feather moult together: Differences in moulting distribution of four species of storm-petrels
Birds of a feather moult together: Differences in moulting distribution of four species of storm-petrels Open
The non-breeding period of pelagic seabirds, and particularly the moulting stage, is an important, but understudied part of their annual cycle as they are hardly accessible outside of the breeding period. Knowledge about the moulting ecolo…
View article: Sharing menus and kids' specials: Inter- and intraspecific differences in stable isotope niches between sympatrically breeding storm-petrels
Sharing menus and kids' specials: Inter- and intraspecific differences in stable isotope niches between sympatrically breeding storm-petrels Open
Species sharing resources are predicted to compete, but co-occurring species can avoid competition through niche partitioning. Here, we investigated the inter- and intra-specific differences using stable isotope analyses in the black-belli…
View article: Differences in tail feather growth rate in storm-petrels breeding in the Northern and Southern hemisphere: a ptilochronological approach
Differences in tail feather growth rate in storm-petrels breeding in the Northern and Southern hemisphere: a ptilochronological approach Open
Moulting and breeding are costly stages in the avian annual cycle and may impose trade-offs in energy allocation between both stages or in their timing. Here, we compared feather growth rates (FGR) of rectrices in adults between two pairs …
View article: Nest characteristics determine nest microclimate and affect breeding output in an Antarctic seabird, the Wilson’s storm-petrel
Nest characteristics determine nest microclimate and affect breeding output in an Antarctic seabird, the Wilson’s storm-petrel Open
The importance of nest characteristics for birds breeding in the extreme climate conditions of polar regions, has been greatly understudied. Nest parameters, like nest orientation, exposure and insulation, could strongly influence microcli…
View article: Light‐level geolocators reveal migratory connectivity in European populations of pied flycatchers <i>Ficedula hypoleuca</i>
Light‐level geolocators reveal migratory connectivity in European populations of pied flycatchers <i>Ficedula hypoleuca</i> Open
Understanding what drives or prevents long‐distance migrants to respond to environmental change requires basic knowledge about the wintering and breeding grounds, and the timing of movements between them. Both strong and weak migratory con…