Birds have been traditionally considered as being mostly diurnal, with a few groups being characteristically nocturnal in their habits (Martin 1990). Among colonial waterbirds,  many species are strictly or regularly active ...

El estuario de Bahía Blanca en Argentina se encuentra bajo el efecto de la contaminación microbiológica a partir del vertido de desagües cloacales sin tratamiento previo y los patógenos asociados. En este estuario existen ...

Olrog's Gull (Larus atlanticus) is a vulnerable species; however, no study has addressed the relationship between body measurements and sex. To provide an easy and reliable work tool to identify the sex of individuals, ...

Analysis of serum parameters provides information about body condition, nutritional state, and health status of individuals/species, and has broad application in ecological research and veterinary diagnosis. This study ...

We studied the diet of breeding Olrog’s Gulls Larus atlanticus during 1994 at two colonies in Golfo San Jorge, Argentina, through the analysis of 207 regurgitated pellets. The diet at Isla Felipe and Isla Vernaci Sudoeste ...

Behavioural differences between individuals are expected when animal face novel stimuli. Aversion responses in such situations are called neophobia. Here, we assessed the degree of neophobia towards objects with respect ...

Persistent organic pollutants (POPs) are of great concern for the environment. In this study we (a) determine levels and distribution of OCPs, PCBs, and PBDEs in sediments and two crab species (Neohelice granulata and ...

En este trabajo se dan a conocer avistajes de la Gaviota Cangrejera (Larus atlanticus) obtenidos durante el desarrollo de un proyecto de evaluación de la interacción entre pesquerías de arrastre de altura y aves marinas ...