Search Results for: Spheniscus magellanicus

Publications

Natural selection on morphology varies among years and by sex in Magellanic Penguins (Spheniscus magellanicus)

Laura E. Koehn , Jeffrey J. Hard , Elaine P. Akst , and P. Dee BoersmaThe Auk 133(4):783-805. 2016.https://doi.org/10.1642/AUK-16-50.1 AbstractThe evolution of morphology in a population reflects several factors, including the influence of environmental variability on natural selection. We estimated natural selection on, and heritability of, 4 individual morphological traits (bill length, bill depth, flipper length, and foot length) and […]

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Publications

Foot darkening with age in Spheniscus penguins: applications and functions

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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News

Penguin Awareness Day 2026

We hope that most people are aware that penguins exist (we hope!), but are you aware of each penguin species’ IUCN Red List status? Established in 1964, the International Union for Conservation of Nature’s Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global extinction risk status of animal, fungus and plant

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Publications

A fearful scourge to the penguin colonies

Full title: A fearful scourge to the penguin colonies: Southern giant petrel (Macronectes giganteus) predation on living Magellanic penguins (Spheniscus magellanicus) may be more common than assumedAuthors: Dr. Eric Wagner, Dr. Ginger Rebstock and Dr. P Dee BoersmaJournal: Marine Ecology Press SeriesDOI: 10.1002/ece3.11258 Excerpt from abstract: Southern giant petrels (Macronectes giganteus) are important consumers that range across the oceans throughout

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Study Species

Our study species Magellanic penguin Spheniscus magellanicus African wild dog Lycaon pictus Galápagos penguin Spheniscus mendiculus Great Whales Cetacea Orca Orcinus orca

Publications

Unprecedented heat mortality of Magellanic Penguins

Authors: Katie Holt and Dee BoersmaJournal: Ornithological ApplicationsDOI: https://doi.org/10.1093/ornithapp/duab052 Abstract excerpt: Extreme weather events are becoming more frequent and severe, leading to an increase in direct, adverse thermoregulatory impacts on wildlife. Here, we document an unprecedented, single-day, heat-related mortality event of Magellanic Penguins (Spheniscus magellanicus) at Punta Tombo, Chubut Province, Argentina, one of the largest breeding colonies for this species.

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Publications

Consequences of phenological shifts and a compressed breeding period in Magellanic penguins

Excerpt from the abstract: “Using 34 yr of data from the Magellanic penguin (Spheniscus magellanicus) colony at Punta Tombo, Argentina, we examined the consequences of the delayed onset of breeding (i.e., arrival and egg-laying dates) that has occurred at the colony since 1983. […] We find that delayed breeding has significantly compressed nestling periods at Punta Tombo, influencing chick growth and

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Magellanic Penguin Biology

Magellanic Penguin Biology Where are they found? Magellanic penguins are found around southern South America, swimming in waters of the continental shelf, or breeding in colonies along the coast and islands. Adults spend about half the year at sea, seldom coming ashore, and half the year at breeding colonies in southern Argentina, southern Chile, and the Falkland/Malvinas Islands. The northern-most

Publications

Effects of age on Magellanic penguin telomeres

Full Title: Magellanic penguin telomeres do not shorten with age with increased reproductive effort, investment, and basal corticosterone From the Abstract: “All species should invest in systems that enhance longevity; however, a fundamental adult life-history trade-off exists between the metabolic resources allocated to maintenance and those allocated to reproduction. Long-lived species will invest more in reproduction than in somatic maintenance

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Research Publications

Research Publications Scientific Publications are available in PDF format upon request.Please Contact Us and include the title and year of the publication you are requesting. Penguins: Natural History and Conservation (2013) Changing course: Relocating commercial tanker lanes significantly reduces threat of chronic oiling for a top marine predator (2023) Generative AI as a tool to accelerate the field of ecology

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