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Under a neighbour's influence: public information affects stress hormones and behaviour of a songbird.

Jamie M Cornelius1, Creagh W Breuner, Thomas P Hahn

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Public information influences stress hormone release in red crossbills during food scarcity. This social information integration may link environmental assessment, behavior, and group decision-making.

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Area of Science:

  • Behavioral Ecology
  • Neuroendocrinology
  • Conservation Physiology

Background:

  • Socially acquired information enhances environmental assessment and fitness.
  • Public information is crucial for species facing unpredictable resources, especially with human disturbance.
  • Physiological mechanisms integrating direct foraging and public information remain unclear.

Purpose of the Study:

  • To investigate the effects of public information on behavioral and hormonal responses to food reduction in red crossbills.
  • To explore potential physiological links between social information, environmental assessment, and behavioral adjustments.

Main Methods:

  • Manipulating the social environment of captive red crossbills (Loxia curvirostra).
  • Assessing behavioral and hormonal (corticosterone) responses during periods of food shortage.

Main Results:

  • Public information modulated the release of glucocorticoids (stress hormones) in response to food scarcity.
  • Corticosterone levels were either attenuated or intensified based on the social environment.
  • Social interactions may amplify population-level stressors in individual physiology.

Conclusions:

  • Public information acts as a physiological mechanism linking environmental assessment and behavioral change.
  • This mechanism can influence individual decision-making and facilitate group synchronization.
  • Socially mediated stress responses highlight the importance of social context in physiological regulation.