7 Works

Data from: Rodent-avoidance, topography and forest structure shape territory selection of a forest bird

Gilberto Pasinelli, Alex Grendelmeier, Michael Gerber & Raphaël Arlettaz
Background - Understanding the factors underlying habitat selection is important in ecological and evolutionary contexts, and crucial for developing targeted conservation action in threatened species. However, the key factors associated to habitat selection often remain poorly known. We evaluated hypotheses related to abiotic and biotic factors thought to affect territory selection of the wood warbler Phylloscopus sibilatrix, a passerine living in an unpredictable environment owing to irregular rodent outbreaks and showing long-term declines particularly in...

Data from: Sex-dependent carry-over effects on timing of reproduction and fecundity of a migratory bird

Nicola Saino, Roberto Ambrosini, Manuela Caprioli, Andrea Romano, Maria Romano, Diego Rubolini, Chiara Scandolara & Felix Liechti
Life of many organisms flows as a sequence of annual cycles. Timing of cyclical events is shaped by natural selection also via the domino effects that any life history stage has on the stages that follow. Such ‘carry-over effects’ have major consequences for evolutionary, ecological and demographic processes, but the causes that generate their individual-level variation, including the effect of sex, are poorly understood. We used light-level geolocators to study carry-over effects on the year-round...

Data from: Impact of spatial variation of a crucial prey, the molecricket, on hoopoe territory occupancy and reproduction

Nicolas Guillod, Raphaël Arlettaz & Alain Jacot
Direct benefits accrued from securing a territory of sufficient quality are important determinants of individual fitness and population persistence. Food supply is one of the main factors of animal territory quality, with spatial and temporal variation in prey availability largely dictating reproductive output and thus population dynamics. In a Swiss hoopoe population, molecrickets Gryllotalpa gryllotalpa, the most profitable prey locally, can constitute most of the food biomass delivered to chicks by parents. We first investigated...

Data from: Body temperature regulation in hot environments

Jan-Åke Nilsson, Mary Ngozi Molokwu & Ola Olsson
Organisms in hot environments will not be able to passively dissipate metabolically generated heat. Instead, they have to revert to evaporative cooling, a process that is energetically expensive and promotes excessive water loss. To alleviate these costs, birds in captivity let their body temperature increase, thereby entering a state of hyperthermia. Here we explore the use of hyperthermia in wild birds captured during the hot and dry season in central Nigeria. We found pronounced hyperthermia...

Data from: A rare study from the wintering grounds provides insight into the costs of malaria infection for migratory birds

Marjorie C. Sorensen, Muhammad Asghar, Staffan Bensch, Graham D. Fairhurst, Susanne Jenni-Eiermann & Claire N. Spottiswoode
Malaria parasites can have strong effects on the population dynamics and evolution of migratory bird species. In many species, parasite transmission occurs on the wintering grounds, but studies to determine the consequences of infection have taken place during the breeding season, when malaria parasites circulate at chronic levels. We examined the predictors of malarial infections for great reed warblers during the northern winter in Africa, where active parasite transmission is thought to occur and naïve...

Data from: Eggs brought in from afar: Svalbard-breeding pink-footed geese can fly their eggs across the Barents Sea

Marcel Klaassen, Steffen Hahn, Harry Korthals & Jesper Madsen
Many Arctic-breeding waterbirds are thought to bring nutrients for egg production from southern latitudes to allow early breeding. It has proved problematic to quantify the extent of such capital breeding and identify whether nutrients for egg production are brought in from nearby or from afar. Before reaching their breeding grounds on Svalbard, pink-footed geese Anser brachyrhynchus fly ∼ 1100 km across the Barents Sea from Norway. Using abdominal profile indexing (API) we scored body stores...

Data from: Evidence of reduced individual heterogeneity in adult survival of long-lived species

Guillaume Peron, Jean-Michel Gaillard, Christophe Barbraud, Christophe Bonenfant, Anne Charmantier, Rémi Choquet, Tim Coulson, Vladimir Grosbois, Anne Loison, GIlbert Marzolin, Norman Owen-Smtih, Déborah Pardo, Floriane Plard, Roger Pradel, Carole Toïgo, Olivier Gimenez & Norman Owen-Smith
The canalization hypothesis postulates that the rate at which trait variation generates variation in the average individual fitness in a population determines how buffered traits are against environmental and genetic factors. The ranking of a species on the slow-fast continuum – the covariation among life-history traits describing species-specific life cycles along a gradient going from a long life, slow maturity, and low annual reproductive output, to a short life, fast maturity, and high annual reproductive...

Registration Year

  • 2016

Resource Types

  • Dataset


  • Swiss Ornithological Institute
  • Lund University
  • University of Bern
  • Université Paul-Valéry Montpellier
  • University of Milan
  • University of Saskatchewan
  • University of Cambridge
  • Aarhus University
  • Nederlands Instituut voor Ecologie
  • University of Milano-Bicocca