Results 61 to 70 of about 494 (158)

Establishment of a stable isotope database for New Zealand fur seal breeding colonies using δ13C and δ15N in pup vibrissae

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1164-1186, December 2025.
ABSTRACT The New Zealand fur seal/kekeno (Arctocephalus forsteri, NZFS) is native to Aotearoa/New Zealand. Its original range included the entire coast of mainland New Zealand, and offshore and subantarctic islands. The NZFS has gradually recolonised much of its former range after being almost extirpated by hunting, however, little is known about ...
Diana Galbraith, B. Louise Chilvers
wiley   +1 more source

“Tero science”: producing evidence in the south for developing regulations in the north

Tapuya
This article introduces the “tero science” hypothesis to analyze the dynamics of knowledge production between the Global South and the Global North. The tero, a small South American bird, sings away from its nest to distract predators and protect its ...
Ezequiel Sosiuk
doaj   +1 more source

Disturbance by jet boating increases corticosterone concentrations in the black‐backed gull (Larus dominicanus)

New Zealand Journal of Zoology, Volume 52, Issue 5, Page 537-550, December 2025.
ABSTRACT Recreational activities such as jet boating have the potential to disturb native birds that rely on braided river habitats. To examine whether jet boating affects levels of glucocorticoid hormones, which can increase in animals under stress, we compared concentrations of corticosterone in the faeces of nesting black‐backed gulls (Larus ...
Sanaz Safavian, James V. Briskie, Elissa Cameron, Hazel Chapman   +3 more
wiley   +1 more source

Patterns in tern trophic diversity in a region experiencing rapid climate change

Ecosphere, Volume 16, Issue 10, October 2025.
Abstract Foraging plasticity provides a mechanism for long‐lived species to adapt to rapidly changing environments. When shifts in food availability occur, individual variation in plasticity can lead to an increase in within‐species trophic diversity. We tested for drivers of trophic diversity in Arctic tern (Sterna paradisaea) and common tern (Sterna ...
Natasha J. Gownaris, Linda J. Welch, Jill E. Tengeres   +2 more
wiley   +1 more source

Environmental and Evolutionary Forces Shaping Penguin Geographic Limits

Journal of Biogeography, Volume 52, Issue 9, September 2025.
ABSTRACT Aim Penguins are seabirds exclusively found in the Southern Hemisphere, with their existence dating back to the late Cretaceous. Despite their exceptional dispersal capabilities, which allow them to inhabit a wide range of environments—from polar regions to temperate zones, and even near the Equator—penguins are absent in the Northern ...
Amanda Mourão Santos, Ubirajara Oliveira   +1 more
wiley   +1 more source

The decline of Falkland Islands penguins in the presence of a commercial fishing industry La disminución de los pingüinos de las Islas Falklands en la presencia de actividades de pesca comercial

Revista Chilena de Historia Natural, 2002
The Falkland Islands are an important breeding site for three species of penguin, gentoo (Pygoscelis papua), southern rockhopper (Eudyptes c. chrysocome) and Magellanic penguin (Spheniscus magellanicus).
MIKE BINGHAM
doaj  

Is What Comes out the Same as What Goes in? A Preliminary Investigation of the Isotopic Impacts of Digestion by Red‐Tailed Hawks (Buteo jamaicensis) and Eurasian Eagle Owls (Bubo bubo)

Ecology and Evolution, Volume 15, Issue 5, May 2025.
Isotope analysis of predator feces and consumed prey remains can be used to non‐invasively track diet and reconstruct past environment and climate conditions. However, one must account for the isotopic difference between diet and feces, as well as the possible influence of digestion on consumed prey tissues.
Brooke Erin Crowley, Madison Laurel Greenwood, Rachel Elizabeth Brown Reid   +2 more
wiley   +1 more source

Heterophyid trematodes (Digenea) from penguins: A new species of Ascocotyle Looss, 1899, first description of metacercaria of Ascocotyle (A.) patagoniensis Hernández-Orts, Montero, Crespo, García, Raga and Aznar, 2012, and first molecular data

International Journal for Parasitology: Parasites and Wildlife, 2019
Two species of heterophyid trematodes were found in the Magellanic penguin, Spheniscus magellanicus (Forster), from Patagonia, Argentina. Ascocotyle (Ascocotyle) patagoniensis Hernández-Orts et al.
Jesús S. Hernández-Orts, Simona Georgieva, Dennis N. Landete, Tomáš Scholz   +3 more
doaj   +1 more source

Clinical biochemistry of rescued Magellanic Penguins (Spheniscus magellanicus): serum or heparinized plasma?

Arquivo Brasileiro de Medicina Veterinária e Zootecnia
In the last few years, an increasing number of debilitated Magellanic penguins (Spheniscus magellanicus) has been rescued and taken to rehabilitation centers on Brazil’s southern coast to be clinically treated and evaluated for re-introduction. This work
J. Morais, J. Volpato, A. Costa, C. Kolesnikovas, M. Souza, M. Saito   +5 more
doaj   +1 more source

Insights into the Foraging Behavior of Magellanic Penguins ( Spheniscus magellanicus )

Waterbirds, 2018
Between 25–30 November 2013, 2014 and 2015, miniaturized video cameras were attached to Magellanic Penguins (Spheniscus magellanicus; n = 14) in Punta Norte/San Lorenzo, Peninsula Valdes, Chubut, Argentina. The objective was to examine prey selection, consumption of untraceable prey, and inter- and intraspecific interactions.
Gómez Laich, Agustina Marta, Yoda, Ken, Quintana, Flavio Roberto   +2 more
openaire   +2 more sources