Dr. Ginger Rebstock

Foot darkening with age in Spheniscus penguins: applications and functions

Publications /

From the abstract: “We found that Spheniscus penguins have pale feet at hatching and the feet become darker with age throughout the lives of individuals. We showed that we can accurately predict the age structure of a colony of Magellanic penguins Spheniscus magellanicus, but not the ages of individual penguins, based on a sample of foot colors.” Authors: Ginger Rebstock, […]

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Increasing environmental variability inhibits evolutionary rescue in a long-lived vertebrate

Publications /

“Using a multidecadal dataset on Magellanic penguins, we show that despite strong selection on body size, some environmental conditions favored larger bodies, and others favored smaller bodies, thus preventing consistent evolution in one direction or the other […] Such findings highlight that fluctuating selection can be driven by environmental variability, and these processes could eliminate the possibility of evolutionary rescue

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A fearful scourge to the penguin colonies: Southern giant petrel (Macronectes giganteus) predation on living Magellanic penguins (Spheniscus magellanicus) may be more common than assumed

Publications /

Authors: Dr. Eric Wagner, Dr. Ginger Rebstock and Dr. P Dee BoersmaJournal: Marine Ecology Press SeriesDOI: https://doi.org/10.1002/ece3.11258 Excerpt from abstract: Southern giant petrels (Macronectes giganteus) are important consumers that range across the oceans throughout the southern hemisphere […] Here we describe a predation attempt by a trio of southern giant petrels on a molting adult Magellanic penguin (Spheniscus magellanicus) at

A fearful scourge to the penguin colonies: Southern giant petrel (Macronectes giganteus) predation on living Magellanic penguins (Spheniscus magellanicus) may be more common than assumed Read More »

Center paper finalist for Cozzarelli Prize

Abrahms Lab, Boersma Lab, News /

The paper “Climate presses and pulses mediate the decline of a migratory predator”,” published last year ” is the finalist for the Cozzarelli Prize in the category Class VI: Applied Biological, Agricultural, and Environmental Sciences. Congrats to former Abrahms Lab postdoc Dr.T. J. Clark-Wolf, Dr. Dee Boersma, Dr. Ginger A. Rebstock, and Dr. Briana Abrahms! Read the full press release

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Sex-specific migratory behavior in a marine predator results in higher risks to females

Publications /

Metadata Authors: Dr. Ginger Rebstock and Dr. P Dee BoersmaJournal: Marine Ecology Press SeriesDOI: https://doi.org/10.3354/meps14476 Summary Summary written by Sofia Denkovski Protecting Migratory Species Sexual Segregation of Magellanic Penguins Effects of sex-biased distribution on females What does this tell us?

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Field updates: Argentina, April 2023

Boersma Lab, Updates from the Field /

Photo credit: Eric Wagner Thanks to the generous support of Zoo Augsburg in Germany, Dr. Ginger Rebstock and Dr. Eric Wagner were able to return to Punta Tombo for a couple of weeks in April. There, they put twenty satellite tags on penguins—ten females and ten males—that were about to start their post-breeding migration. From last year’s tagging effort, we

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Climate presses and pulses mediate the decline of a migratory predator

Publications /

Authors: T. J. Clark-Wolf, P. Dee Boersma, Ginger A. Rebstock, and Briana AbrahmsJournal: Proceedings of the National Academy of SciencesDOI: 10.1073/pnas.2209821120 Long-term climate changes and extreme climate events differentially impact animal populations, yet whether and why these processes may act synergistically or antagonistically remains unknown…

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Making a perfect penguin_orig

Site fidelity increases reproductive success by increasing foraging efficiency in a marine predator

Publications /

Authors: Ginger A Rebstock, Briana Abrams, P. Dee BoersmaJournal: Behavioral EcologyDOI: 10.1093/beheco/arac052 Seabirds must find food efficiently in the dynamic ocean environment to succeed at raising chicks. In theory, site familiarity, gained by prior experience in a place, should increase foraging efficiency when prey is predictable, and translate into increased reproductive success, though this is difficult to test empirically…

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