Exploratory behavior is linked to stress physiology and social network centrality in free-living house finches (Haemorhous mexicanus)

Hormones and Behavior
Sahnzi C MoyersDana M Hawley

Abstract

Animal personality has been linked to individual variation in both stress physiology and social behaviors, but few studies have simultaneously examined covariation between personality traits, stress hormone levels, and behaviors in free-living animals. We investigated relationships between exploratory behavior (one aspect of animal personality), stress physiology, and social and foraging behaviors in wild house finches (Haemorhous mexicanus). We conducted novel environment assays after collecting samples of baseline and stress-induced plasma corticosterone concentrations from a subset of house finches. We then fitted individuals with Passive Integrated Transponder tags and monitored feeder use and social interactions at radio-frequency identification equipped bird feeders. First, we found that individuals with higher baseline corticosterone concentrations exhibit more exploratory behaviors in a novel environment. Second, more exploratory individuals interacted with more unique conspecifics in the wild, though this result was stronger for female than for male house finches. Third, individuals that were quick to begin exploring interacted more frequently with conspecifics than slow-exploring individuals. Finally, exploratory beha...Continue Reading

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Citations

Sep 13, 2018·Primates; Journal of Primatology·Cédric SueurIvan Puga-Gonzalez
Jul 24, 2020·BMC Genomics·Patricia C Lopes, Barbara König
Sep 22, 2020·Ecology and Evolution·André C FerreiraDamien R Farine
Aug 14, 2019·The Journal of Animal Ecology·Hanja B BrandlWiebke Schuett

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