Results 21 to 30 of about 4,964 (255)

Up for grabs: prey herding by penguins facilitates shallow foraging by volant seabirds [PDF]

open access: yesRoyal Society Open Science, 2019
Visual and olfactory signals are commonly used by seabirds to locate prey in the horizontal domain, but foraging success depends on prey depth and the seabird's ability to access it.
A. M. McInnes, P. A. Pistorius
doaj   +1 more source

Feathers as a Tool to Assess Mercury Contamination in Gentoo Penguins: Variations at the Individual Level. [PDF]

open access: yesPLoS ONE, 2015
Feathers have been widely used to assess mercury contamination in birds as they reflect metal concentrations accumulated between successive moult periods: they are also easy to sample and have minimum impact on the study birds.
Sara Pedro   +8 more
doaj   +1 more source

Seabirds in Conditions of Local Chronic Oil Pollution, Davis Sea, Antarctica

open access: yesBirds, 2021
Oil spills are rare in Antarctica. They threaten flying birds and penguins. This is the first report on the interactions of seabirds with oil in the area of the Mirny Station (East Antarctica). The purpose of the study is to determine the total number of
Sergey Golubev
doaj   +1 more source

Evolutionary and Biogeographical History of Penguins (Sphenisciformes): Review of the Dispersal Patterns and Adaptations in a Geologic and Paleoecological Context

open access: yesDiversity, 2022
Despite its current low diversity, the penguin clade (Sphenisciformes) is one of the groups of birds with the most complete fossil record. Likewise, from the evolutionary point of view, it is an interesting group given the adaptations developed for ...
Jonathan S. Pelegrín   +1 more
doaj   +1 more source

Important marine areas for endangered African penguins before and after the crucial stage of moulting

open access: yesScientific Reports, 2022
The population of the Endangered African penguin Spheniscus demersus has decreased by > 65% in the last 20 years. A major driver of this decrease has been the reduced availability of their principal prey, sardine Sardinops sagax and anchovy Engraulis ...
Tegan Carpenter-Kling   +9 more
doaj   +1 more source

Post-moult movements of sympatrically breeding Humboldt and Magellanic Penguins in south-central Chile

open access: yesGlobal Ecology and Conservation, 2016
Ten Humboldt (Spheniscus humboldti) and eight Magellanic Penguins (S. magellanicus) were successfully equipped with satellite transmitters in March 2009 on Islotes Puñihuil in central south-Chile to follow their post-moult dispersal.
Klemens Pütz   +5 more
doaj   +1 more source

Effects of Diesel, Heavy Metals and Plastics Pollution on Penguins in Antarctica: A Review

open access: yesAnimals, 2021
Antarctica is a relatively pristine continent that attracts scientists and tourists alike. However, the risk of environmental pollution in Antarctica is increasing with the increase in the number of visitors.
Nurul Aini Puasa   +8 more
doaj   +1 more source

Regurgitation of the koilin layer in chinstrap penguins (Pygoscelis antarcticus) and its association with gastric parasites

open access: yesPolar Research, 2016
The koilin membrane, formed by the secretions of the ventricular and pyloric glands, functions as a protective layer in the gizzards of most bird species.
Han-Kyu Kim   +4 more
doaj   +1 more source

La producción de aceite de pingüino en Patagonia y Malvinas (1850-1880)

open access: yesNuevo mundo - Mundos Nuevos, 2022
Penguins were one of the many marine animals that became a commercial object by being connected to the great market and consumption of oils and skins of the 19th century.
Sofia Clara Haller, Susana V. García
doaj   +1 more source

Analysis of hematologic and serum chemistry values of Spheniscus magellanicus with molecular detection of avian malarial parasites (Plasmodium spp.)

open access: yesPesquisa Veterinária Brasileira, 2014
Magellanic penguins (Spheniscus magellanicus) routinely migrate from their breeding colonies to Southern Brazil often contracting diseases during this migration, notably avian malaria, which has been already reported in Brazil and throughout the world ...
Sabrina D.E. Campos   +7 more
doaj   +1 more source

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