Results 71 to 80 of about 6,472 (200)
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 +3 more
wiley +1 more source
Revista Peruana de Biología, 2014 Entre agosto de 1997 y abril de 1998, se evaluó, al sur de la punta guanera de San Juan de Marcona, la mortandad de las poblaciones de aves marinas. Especies de alimentación exclusivamente pelágica y de distribución restringida al ámbito de la Corriente ...
Manuel Apaza, Aída Figari
doaj +1 more source
Seasonal diet of Magellanic Penguin (Spheniscus magellanicus) juveniles revealed with a stable isotopes analysis of claws [PDF]
, 2015 Se realizó un análisis de isótopos estables en uñas para evaluar la composición de la dieta y el uso estacional de los recursos tróficos en individuos juveniles de Pingüino Patagónico (Spheniscus magellanicus) provenientes de las costas de Brasil.
Cardona, Luis +5 more
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Constrained variation in the internal architecture of avian wing bones
Functional Ecology, Volume 39, Issue 12, Page 3611-3627, December 2025.Read the free Plain Language Summary for this article on the Journal blog. Abstract Extant birds exhibit remarkable ecological disparity accompanied by widespread skeletal convergence driven by functional adaptation. Investigations of morphofunctional associations with ecological factors have frequently focused on the external morphology of avian wing ...
Fabio Alfieri +4 more
wiley +1 more source
Gross and histopathological findings in magellanic penguins (Spheniscus magellanicus Forster, 1781)
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2012 Durante os movimentos migratórios os Pinguins-de-Magalhães chegam às águas da costa brasileira, especialmente nos estados do sul do Brasil até o estado do Rio de Janeiro. Muitos chegam desidratados, hipotérmicos, com lesões traumáticas ou coberto de óleo,
C.O. Carvalho +4 more
doaj +1 more source
Journal of Applied Ecology, Volume 62, Issue 12, Page 3277-3287, December 2025.While spatial overlap is commonly used to quantify interactions, it may underestimate the true degree of competition between foraging predators and fishing vessels. Our alternative population‐level measure of ‘overlap intensity’ accounts for the number of individuals involved in the areas of overlap, and may provide a more comprehensive understanding ...
Jacqueline S. Glencross +8 more
wiley +1 more source
Penguins of the Magellan region
Scientia Marina, 1999 The Magellan region, including the Falkland Islands, is one of the world´s most important areas for seabirds, and especially penguins. World-wide there are 17 species of penguin; 7 of these regularly breed around the coastal waters of South America, and ...
M. Bingham, E. Mejias
doaj +1 more source
Factors affecting reproductive success and clutch quality of Magellanic Penguin (Spheniscus Magellanicus) in the Beagle Channel, Tierra del Fuego, Argentina [PDF]
, 2010 En este estudio se estimó la duración de los viajes de alimentación y el tamaño corporal de machos y hembras del pingüino patagónico durante el período reproductivo en una colonia del Canal Beagle, Tierra del Fuego, y se determinaron las implicancias de ...
Favero, Marco +3 more
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E3S Web of Conferences, 2013 Birds due to its position in the trophic chain are good monitors of the marine environment in terms of mercury contamination. For the proper interpretation of results it is necessary to know both the processes of accumulation of this metal in their ...
Falkowska L. +5 more
doaj +1 more source
Systematics of small Gehyra (Squamata: Gekkonidae) of the southern Kimberley, Western Australia: redescription of G. kimberleyi Börner & Schüttler, 1983 and description of a new restricted range species [PDF]
, 2016 Ongoing fieldwork and molecular research continues to reveal that the monsoonal tropics of northern Australia contain more vertebrate species than currently recognised. Here we focus on two morphologically distinctive, yet unrecognised forms in the genus
Bourke, Gayleen +4 more
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