Results 91 to 100 of about 40,856 (240)

Are arrival date and body mass after spring migration influenced by large-scale environmental factors in a migratory seabird?

open access: yesFrontiers in Ecology and Evolution, 2015
Changes in the timing of migratory events have been observed recently in many migratory species, most likely in response to climatic change. In the common tern Sterna hirundo we examined such changes in spring arrival date and body mass based on a 19 ...
K. Lesley eSzostek   +2 more
doaj   +1 more source

Local Birds in and around the Offhore wind Farm Egmond aan Zee (OWEZ) [PDF]

open access: yes, 2011
This report presents the final results of a four-year study of seabird distribution patterns in and around the first offshore wind farm in Dutch North Sea waters.
Dijkman, E.M., Leopold, M.F., Teal, L.R.
core  

Ontogeny of foraging behaviour in an opportunistic gull inhabiting urban marine ecosystems

open access: yesWildlife Biology, EarlyView.
Urbanization affects ecosystems by reducing biodiversity and displacing species from native habitats. While some suffer, others, like urban wildlife, adapt through innovative feeding and behaviours that improve their fitness in human‐altered settings. Despite research on wildlife in urban areas, the development of foraging behaviour in urban species is
Joan Navarro   +7 more
wiley   +1 more source

Northern Gannet foraging trip length increases with colony size and decreases with latitude

open access: yesRoyal Society Open Science
Density-dependent competition for food influences the foraging behaviour and demography of colonial animals, but how this influence varies across a species’ latitudinal range is poorly understood.
Bethany L. Clark   +22 more
doaj   +1 more source

Seabirds as a subsistence and cultural resource in two remote Alaskan communities

open access: yesEcology and Society, 2014
Small rural Alaskan communities face many challenges surrounding rapid social and ecological change. The role of local subsistence resources may change over time because of changes in social perception, economic need, and cultural patterns of use.
Rebecca C. Young   +3 more
doaj   +1 more source

Isolating Mechanisms in Seabirds [PDF]

open access: yesEvolution, 1987
In most species of birds, differences in plumage coloration or song structure act as isolating mechanisms. In seabirds, plumages are generally drab, and vocal repertoires are limited so that other phenotypic attributes must act as isolating mechanisms.
openaire   +2 more sources

Using programmable infusion pump in avian species – a validation methodology in geese

open access: yesWildlife Biology, EarlyView.
Wildlife face anthropogenic and natural stressors that affect their physiology and behaviour. The activity of the hypothalamic–pituitary–adrenal axis and glucocorticoid (GC) production is intrinsically linked with energy regulation and environmental stressors.
Myriam Trottier‐Paquet   +5 more
wiley   +1 more source

Observations of High Frequency, Long Range Acoustic Propagation in a Harbor Environment [PDF]

open access: yes, 2008
The positioning and navigation of AUV\u27s in harbor environments using underwater acoustics is complicated by shallow waters, long propagation distances, and complex oceanographic features.
Mayer, Larry A.   +2 more
core   +1 more source

Nesting ecology of an ice‐associated seabird, Kittlitz's murrelet, at the northern edge of its range

open access: yesWildlife Society Bulletin, EarlyView.
We studied the Kittlitz's murrelet, an ice‐associated seabird of conservation concern, at the northern edge of its range. Over a 2‐year period, we estimated nest density and success at 2 sites, captured and telemetered nesting murrelets, and tested the use of a thermal camera to improve nest detection.
Michelle L. Kissling   +9 more
wiley   +1 more source

Loggers affect the foraging behaviour and fitness of European shags

open access: yesJournal of Avian Biology
Biologgers enable real‐time collection of detailed behavioural and physiological data from wide‐ranging animals, including seabirds inhabiting remote regions.
Graeme Shannon   +5 more
doaj   +1 more source

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