Results 81 to 90 of about 44,293 (251)
Body proportions for the facilitation of walking, running and flying: the case of partridges
BMC Evolutionary Biology, 2018 Background Predation is one of the most important natural selection forces. Prey species can optimize feeding behavior and escape from predators based on mobility conditioned by body proportions.
Jesús Nadal +2 more
doaj +1 more source
Glass technology involved in the manufacture of magnetometer components [PDF]
, 1972 Glass technology has developed quicker and less costly techniques in sealing and vacuum processing which result in improved lamps and bulbs, thus producing a less costly and more reliable instrument ...
Bergen, G.
core +1 more source
Age and sex-selective predation moderate the overall impact of predators [PDF]
, 2014 © 2014 The Authors. Journal of Animal Ecology published by John Wiley & Sons Ltd on behalf of British Ecological Society. Acknowledgements: Thanks to J. Reid, S. Redpath, A.
Davison, Martin +6 more
core +5 more sources
Wildlife Biology, EarlyView.Wildlife research has benefitted from the development of new methods that allow data to be collected remotely, with less disturbance to focal animals. The proliferation of livestreaming webcams, for example, those used by nature reserves for public engagement purposes, have offered new possibilities for the study of wildlife behaviour.
Kevin A. Wood +2 more
wiley +1 more source
A non-invasive feather-based methodology for the detection of blood parasites (Haemosporida)
Scientific Reports, 2023 Blood parasite (haemosporidian) infections are conventionally detected using blood samples; this implies capturing and handling birds to obtain them, which induces stress and causes pain.
Merit González-Olvera +5 more
doaj +1 more source
Using programmable infusion pump in avian species – a validation methodology in geese
Wildlife 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
Geosciences, 2012 At least two lineages of Mesozoic birds are known to have possessed a distinct feather morphotype for which there is no neornithine (modern) equivalent. The early stepwise evolution of apparently modern feathers occurred within Maniraptora, basal to the ...
David J. Bottjer +4 more
doaj +1 more source
Winter Conditions Influence Biological Responses of Migrating Hummingbirds
, 2016 Conserving biological diversity given ongoing environmental changes requires the knowledge of how organisms respond biologically to these changes; however, we rarely have this information. This data deficiency can be addressed with coordinated monitoring
Burnham K. P. +8 more
core +1 more source
Pattern of Post-Juvenile Moult in Common Snipe (Gallinago Gallinago) and Its Implications for Ageing of the Species [PDF]
, 2010 External ageing of Common Snipe (Gallinago gallinago) still engenders considerable problems. To improve precision of age determination on the basis of plumage characteristics a scheme of post-juvenile moult was investigated in approximately 1200 first ...
Janiszewski, Tomasz +3 more
core +1 more source
Brown tawny owls moult more flight feathers than grey ones
Journal of Avian Biology, 2013 The mechanisms by which melanin‐based colour polymorphism can evolve and be maintained in wild populations are poorly known. Theory predicts that colour morphs have differential sensitivity to environmental conditions. Recently it has been proposed that colour polymorphism covaries genetically with intrinsic and behavioural properties. Plumage moult is
Brommer J. E. +5 more
openaire +2 more sources