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Article
Carole A. Niffenegger, Auteur ; Sebastian Dirren, Auteur ; CHRISTIAN SCHANO, Auteur ; Fränzi Korner-Nievergelt, AuteurNest cavities with suitable thermal conditions can provide fitness benefits for birds through reduced thermoregulatory cost. Insulation can however vary between natural and human-made cavities. While several studies have assessed cavity temperat[...]
Article
Julia Paterno, Auteur ; Fränzi Korner-Nievergelt, Auteur ; Pia Anderwald, Auteur ; Valentin Amrhein, AuteurBirds often have a peak of singing activity at dawn, and the timing of dawn song is species-specific. However, the start of singing at dawn may also depend on environmental factors. We investigated the effects of different environmental variable[...]
Article
Sebastian Dirren, Auteur ; Stéphanie Borel, Auteur ; Nina Wolfrum, Auteur ; Fränzi Korner-Nievergelt, AuteurInfectious diseases bear a great risk for populations of naïve host species. In the present article we inform about the first microscopic and molecular detection of the bird pathogen Trichomonas gallinae in the White-winged Snowfinch (Montifring[...]
Article
Bruno Bruderer, Auteur ; Dieter Peter, Auteur ; Fränzi Korner-Nievergelt, AuteurThis review covers 40 years of migration studies of the Swiss Ornithological Institute with the tracking radar “Superfledermaus”. Since 1968, this pencil-beam radar was—according to its (military) capacities of surveillance and tracking—applied [...]
Article
Sabine M. Hille, Auteur ; Fränzi Korner-Nievergelt, Auteur ; Maarten Bleeker, Auteur ; Nigel J. Collar, AuteurVulture populations are declining steeply worldwide. Vulture 'restaurants' or feeding stations are a tool for maintaining and monitoring numbers, but individual species may be disadvantaged by the effects of carcass distribution, carcass size an[...]
Article
Fränzi Korner-Nievergelt, Auteur ; Ommo Hüppop, AuteurWe give a short introduction to the principles of Bayesian data analyses and guide the reader through two examples using R. Differences and similarities to frequentist statistics are explained. Bayesian analysis is combining prior information (e[...]
Article
Claire Agnès Pernollet, Auteur ; Fränzi Korner-Nievergelt, Auteur ; Lukas Jenni, AuteurThe Alpine Rock Ptarmigan Lagopus muta helvetica is considered to be particularly vulnerable to climate change because it lives exclusively above the treeline in alpine habitats and is adapted to cold climates. Its Swiss population index has dec[...]
Article
Linda Visinoni, Auteur ; Claire Agnès Pernollet, Auteur ; Jean-François Desmet, Auteur ; Fränzi Korner-Nievergelt, Auteur ; Lukas Jenni, AuteurThe Alpine Rock Ptarmigan (Lagopus muta helvetica)—which is adapted to arctic and alpine environments—is suspected to be vulnerable to climate warming, but direct evidence is limited. Microclimates within a landscape may allow species to exist i[...]
Ouvrage
Josef Hofer, Auteur ; Pius Korner-Nievergelt, Auteur ; Fränzi Korner-Nievergelt, Auteur | Sempach : Ala, Schweizerische Gesellschaft für Vogelkunde und Vogelschutz | Der Ornithologische Beobachter : Monatsberichte für Vogelkunde und Vogelschutz : offizielles Organ der ALA Schweizer. Gesellschaft für Vogelkunde und Vogelschutz. Beiheft = L'ornithologiste : organe officiel de l'ALA Société suisse pour l'étude des oiseau | 2010
Article
Autumn survival inferred from wing age ratios: Wigeon juvenile survival half that of adults at best?
Matthieu Guillemain, Auteur ; Anthony D. Fox, Auteur ; Hannu Poysa, Auteur ; Veli-Matti Vaananen, Auteur ; Thomas Kjaer Christensen, Auteur ; Patrick Triplet, Auteur ; Vincent Schricke, Auteur ; Fränzi Korner-Nievergelt, AuteurMeasures of first-year autumn mortality rates are important parameters for understanding population dynamics, but have been hitherto unavailable for dabbling ducks in Europe, because most ducks are ringed in winter. We used the temporal change i[...]
Article
Beat Naef-Daenzer, Auteur ; Fränzi Korner-Nievergelt, Auteur ; Wolfgang Fiedler, Auteur ; Martin U. Grüebler, AuteurRecoveries of marked animals hold long-term, large-scale information on survival and causes of mortality, but are prone to bias towards dead recoveries and casualties in the range of presence of potential finders. Thus, accounting for circumstan[...]
Article
Fränzi Korner-Nievergelt, Auteur
Article
Habitatwahl der Dorngrasmücke Sylvia communis in der Westschweiz: Folgerungen für die Artenförderung
Kim Silvana Meichtry-Stier, Auteur ; Fränzi Korner-Nievergelt, Auteur ; Urs Kormann, Auteur ; Martin Spiess, Auteur ; Paul Mosimann-Kampe, Auteur ; Stephan Strebel, Auteur ; Jean-Luc Zollinger, Auteur ; Reto Spaar, Auteur
Article
Josef Hofer, Auteur ; Fränzi Korner-Nievergelt, Auteur ; Pius Korner-Nievergelt, Auteur ; Matthias Kestenholz, Auteur ; Lukas Jenni, AuteurMany waterbird species assemble in large aggregations during winter. In most species, these aggregations are generally thought to be composed of individuals not familiar to each other. In this study, we analysed mark-recapture data of Tufted Duc[...]
Article
Fränzi Korner-Nievergelt, Auteur ; Bernd Leisler, AuteurThere exist two hypotheses of the evolutionary selection pressure which produced high toe pads in passerines: First, insulation of the foot soles in cold winter quarters, and second improved locomotion abilities in coniferous needles. In this st[...]
