Kevin D. Powers
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View article: Nape Coloration Varies with Sex, not Age, Among Great Shearwaters <i>Ardenna gravis</i>
Nape Coloration Varies with Sex, not Age, Among Great Shearwaters <i>Ardenna gravis</i> Open
Most petrels (family Procellariidae) exhibit little or no obvious variation in plumage with age or sex, either because plumage performs no sexual function or does so in a way poorly perceptible to humans. This limits the inferences that ca…
View article: Nape Coloration Varies with Sex, not Age, Among Great Shearwaters <i>Ardenna gravis</i>
Nape Coloration Varies with Sex, not Age, Among Great Shearwaters <i>Ardenna gravis</i> Open
Most petrels (family Procellariidae) exhibit little or no obvious variation in plumage with age or sex, either because plumage performs no sexual function or does so in a way poorly perceptible to humans. This limits the inferences that ca…
View article: Age-Related Interactions with Wind During Migration Support the Hypothesis of Developmental Learning in a Migrating Long-Lived Seabird
Age-Related Interactions with Wind During Migration Support the Hypothesis of Developmental Learning in a Migrating Long-Lived Seabird Open
Wind patterns shape migratory pathways and detours of many procellariiform bird species that seasonally migrate between hemispheres. These seabirds are long-lived, and the period of immaturity is presumed to be a time of development and le…
View article: Exploring the Use of Seabirds as a Dynamic Ocean Management Tool to Mitigate Anthropogenic Risk to Large Whales
Exploring the Use of Seabirds as a Dynamic Ocean Management Tool to Mitigate Anthropogenic Risk to Large Whales Open
Vessel strike and entanglement in fishing gear are global threats to large whales. United States management actions to reduce human-induced serious injury and mortality to large whales have been inadequate, partially due to static, spatial…
View article: Birds of a Feather Eat Plastic Together: High Levels of Plastic Ingestion in Great Shearwater Adults and Juveniles Across Their Annual Migratory Cycle
Birds of a Feather Eat Plastic Together: High Levels of Plastic Ingestion in Great Shearwater Adults and Juveniles Across Their Annual Migratory Cycle Open
Limited work to date has examined plastic ingestion in highly migratory seabirds like Great Shearwaters ( Ardenna gravis ) across their entire migratory range. We examined 217 Great Shearwaters obtained from 2008–2019 at multiple locations…
View article: Spatiotemporal characterization of non-breeding Great Shearwaters Ardenna gravis within their wintering range
Spatiotemporal characterization of non-breeding Great Shearwaters Ardenna gravis within their wintering range Open
View article: Spatiotemporal Characterization of Non-breeding Great Shearwaters <i>Ardenna gravis</i> within their Wintering Range
Spatiotemporal Characterization of Non-breeding Great Shearwaters <i>Ardenna gravis</i> within their Wintering Range Open
Movements of Great Shearwaters Ardenna gravis wintering in the Northwest Atlantic showed age-based spatial and temporal flexibility, with foraging tactics linked to a defined physical preference of their primary prey. From 2013 to 2018, we…
View article: The role of sand lances (<i>Ammodytes</i> sp.) in the Northwest Atlantic Ecosystem: A synthesis of current knowledge with implications for conservation and management
The role of sand lances (<i>Ammodytes</i> sp.) in the Northwest Atlantic Ecosystem: A synthesis of current knowledge with implications for conservation and management Open
The American sand lance ( Ammodytes americanus , Ammodytidae) and the Northern sand lance ( A. dubius , Ammodytidae) are small forage fishes that play an important functional role in the Northwest Atlantic Ocean (NWA). The NWA is a highly …
View article: Stable Isotope Analyses of Multiple Tissues of Great Shearwaters (Ardenna Gravis) Reveals Long-Term Dietary Stability, Short-Term Changes in Diet, and Can be Used as a Tool to Monitor Food Webs
Stable Isotope Analyses of Multiple Tissues of Great Shearwaters (Ardenna Gravis) Reveals Long-Term Dietary Stability, Short-Term Changes in Diet, and Can be Used as a Tool to Monitor Food Webs Open
The great shearwater (Ardenna gravis) is a common pelagic bird with a distribution that spans almost the entire Atlantic basin, which in conjunction with its relatively high abundance, makes great shearwaters an effective bio indicator. We…