Results 41 to 50 of about 137 (110)

Oceanic thermal structure mediates dive sequences in a foraging seabird

open access: yesEcology and Evolution, 2020
Changes in marine ecosystems are easier to detect in upper‐level predators, like seabirds, which integrate trophic interactions throughout the food web.
Xavier Meyer   +6 more
doaj   +1 more source

Post-fledging dispersal of king penguins (Aptenodytes patagonicus) from two breeding sites in the South Atlantic. [PDF]

open access: yesPLoS ONE, 2014
Most studies concerning the foraging ecology of marine vertebrates are limited to breeding adults, although other life history stages might comprise half the total population.
Klemens Pütz   +5 more
doaj   +1 more source

Benefits of Group Foraging Depend on Prey Type in a Small Marine Predator, the Little Penguin.

open access: yesPLoS ONE, 2015
Group foraging provides predators with advantages in over-powering prey larger than themselves or in aggregating small prey for efficient exploitation. For group-living predatory species, cooperative hunting strategies provide inclusive fitness benefits.
Grace J Sutton   +2 more
doaj   +1 more source

Effects of individual pre-fledging traits and environmental conditions on return patterns in juvenile king penguins. [PDF]

open access: yesPLoS ONE, 2011
Despite the importance of early life stages in individuals' life history and population dynamics, very few studies have focused on the constraints to which these juvenile traits are subjected.
Claire Saraux   +4 more
doaj   +1 more source

The Effect of Regulating Zoo Visitor-Penguin Interactions on Zoo Visitor Attitudes

open access: yesFrontiers in Psychology, 2019
Understanding visitor attitudes toward zoo animals can inform the way zoos manage visitor-animal interactions by identifying the factors that may influence visitors and the way visitors interact with animals.
Samantha J. Chiew   +4 more
doaj   +1 more source

Genetic factors for short life span associated with evolution of the loss of flight ability

open access: yesEcology and Evolution, 2020
Acquisition or loss of flying ability is evolutionarily linked with maximum life span (MLS) in mammals and birds. Although ecological factors, such as extrinsic mortality, may lead to either shortened or extended life spans through natural selection, MLS
Atsushi Ikemoto   +3 more
doaj   +1 more source

Combined Effects of Hydrological Drought and Reduced Food Availability on the Decline of the Little Penguins in South Australia

open access: yesFrontiers in Marine Science, 2022
Droughts in many regions of the world are increasing in frequency and severity which, coupled with effects from anthropogenic water extraction and diversion, are reducing river discharges.
Diane Colombelli-Négrel   +6 more
doaj   +1 more source

Invasive species in penguin worlds: An ethical taxonomy of killing for conservation

open access: yesConservation & Society, 2011
This paper explores various attempts to manage predation threats to an endangered population of little penguins (Eudyptula minor) living in Sydney′s North Harbour.
Thom van Dooren
doaj   +1 more source

Can thermoclines be a cue to prey distribution for marine top predators? A case study with little penguins. [PDF]

open access: yesPLoS ONE, 2012
The use of top predators as bio-platforms is a modern approach to understanding how physical changes in the environment may influence their foraging success.
Laure Pelletier   +3 more
doaj   +1 more source

Sexual and geographic dimorphism in northern rockhopper penguins breeding in the South Atlantic Ocean

open access: yesEndangered Species Research, 2019
The Endangered northern rockhopper penguin Eudyptes moseleyi, like all penguins, is monomorphic, making sex determination of individuals in the field challenging.
Steinfurth, A   +4 more
doaj   +1 more source

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