Results 21 to 30 of about 786 (131)

Isotopic ordering in eggshells reflects body temperatures and suggests differing thermophysiology in two Cretaceous dinosaurs [PDF]

open access: yes, 2015
Our understanding of the evolutionary transitions leading to the modern endothermic state of birds and mammals is incomplete, partly because tools available to study the thermophysiology of extinct vertebrates are limited.
Cerling, Thure E.   +13 more
core   +3 more sources

Documentation of new bird taxa, part 3, report for 2007 [PDF]

open access: yes, 2012
Dieser dritte Beitrag in unserer Reihe über neue Vogeltaxa gibt eine Übersicht der im Jahre 2007 neu beschriebenen Gattungen, Arten und Unterarten rezenter Vögel und basiert auf umfangreicher Literaturrecherche.
Bahr, Norbert, Martens, Jochen
core  

Using a live‐streaming webcam to assess the behavioural responses of waterbirds to changes in the density of swans Cygnus spp.

open access: yesWildlife 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

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

Internal transport of alien and native plants by geese and ducks: An experimental study [PDF]

open access: yes, 2015
© 2015 John Wiley & Sons Ltd. Summary: Alien plant species are rapidly spreading in aquatic ecosystems around the world, causing major ecological effects.
Bortolus   +49 more
core   +2 more sources

Estimating crippling loss from hunting with multistate models: a case study on northern bobwhites

open access: yesWildlife Biology, EarlyView.
Hunting as a recreational pursuit provides an important ecosystem service worldwide. Harvest management plays a vital role in regulating wildlife take to ensure long‐term population sustainability and meet value‐based objectives (e.g. hunter satisfaction). However, managers rarely have complete control or observability of harvest mortality.
Amanda S. Cramer   +10 more
wiley   +1 more source

Evolution and phylogeny of birds - Taxonomic consequences [PDF]

open access: yes, 2012
Nucleotidsequenzen von mitochondrialen und nucleären Markergenen eignen sich hervorragend, um die Phylogenie und Evolution der Vögel zu untersuchen. Eine kürzlich publizierte Analyse mit 19 Kerngenen (Hackett et al.
Wink, Michael
core  

Comparing impacts of alien plants and animals in Europe using a standard scoring system [PDF]

open access: yes, 2015
© 2015 British Ecological Society. Alien species can change the recipient environment in various ways, and some of them cause considerable damage. Understanding such impacts is crucial to direct management actions.
Bacher, Sven   +9 more
core   +2 more sources

Fate of orphans of Canada geese harvested by hunters in Connecticut, USA, depends upon which month the parents were killed

open access: yesWildlife Biology, EarlyView.
Little is known about what happens to juvenile birds after one or both of their parents are harvested by hunters during the post‐fledging dependency period. Here, we compare the fate of juvenile Canada geese Branta canadensis that lost ≥ 1 parent to hunters (orphans) during this period to other juveniles that retained both parents (non‐orphans). For 25
Michael R. Conover, Lauren J. Head
wiley   +1 more source

Home - About - Disclaimer - Privacy