The effect of environmental variation on the relationship between survival and risk-taking behaviour in a migratory songbird

• DOI: 10.1093/jeb/voae046
• Publication Date: 2024-04-16T17:53:31Z
• Authors: Katalin Krenhardt; Jesús Martínez-Pa...; David Canal; Mónika Jablonszky; Gergely Hegyi; Márton Herényi; Miklós Laczi; Gábor Markó; Gergely Nagy; Balázs Rosivall; Eszter Szász; Eszter Szöllősi; János Török; Éva Vaskuti; Sándor Zsebők; László Zsolt Gara...
• Keywords: Songbird; Trait; Variation (astronomy); Mark and recapture

Abstract Temporal changes in environmental conditions may play a major role the year-to-year variation fitness consequences of behaviours. Identifying drivers such is crucial to understand evolutionary trajectories behaviours natural contexts. However, our understanding how influences wild remains limited. Using data collected over 14 breeding seasons from collared flycatcher (Ficedula albicollis) population, we examined effect on relationship between survival and risk-taking behaviour, highly variable behavioural trait with great ecological significance. Specifically, using annual recapture probability as proxy survival, evaluated specific predation pressure, food availability, mean temperature behaviour (measured flight initiation distance [FID]). We found negative trend, FID decreased study years changed positive negative. early study, risk-avoiding individuals exhibited higher probability, whereas later years, risk-avoiders had lower probability. did not find evidence that any considered factors mediated behaviour.