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Related Experiment Video

Updated: Aug 10, 2025

Using a Thermal Camera to Measure Heat Loss Through Bird Feather Coats
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Characterization of bird formations using fuzzy modelling.

Elisa Perinot1,2, Johannes Fritz2,3, Leonida Fusani1,3

  • 1Konrad Lorenz Institute of Ethology, Department of Interdisciplinary Life Sciences, University of Veterinary Medicine, Vienna 1160, Austria.

Journal of the Royal Society, Interface
|February 15, 2023
PubMed
Summary
This summary is machine-generated.

Scientists studied northern bald ibises (Geronticus eremita) to understand flocking behavior. Using satellite data and fuzzy logic, they found birds position themselves to benefit from the upwash of leading birds, saving energy.

Keywords:
Geronticus eremitacollective motionflock behaviourfuzzy modellingline formation

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Area of Science:

  • Ornithology
  • Animal behaviour
  • Aerodynamics

Background:

  • Collective behaviour in flying birds is complex and fascinating.
  • Understanding flocking dynamics, like line formation, is crucial for ecological studies.
  • Previous research has explored flight efficiency but lacked detailed spatial analysis.

Purpose of the Study:

  • To investigate if spatial relationships in northern bald ibis flocks are driven by energetically advantageous positioning.
  • To model the aerodynamic interactions, specifically upwash, between flying birds.
  • To determine how birds utilize the wake of leaders for energy conservation.

Main Methods:

  • Collected high-precision flight path data for 29 northern bald ibises using Global Navigation Satellite System (GNSS) loggers.
  • Developed a fuzzy logic model to identify the location of air vortices behind a flying bird.
  • Analyzed spatial data to correlate bird positions with potential upwash benefits.

Main Results:

  • The fuzzy logic model successfully identified birds flying in the aerodynamic wake of others.
  • Demonstrated that following birds can benefit from the upwash generated by leading birds, reducing flight effort.
  • Provided clear indications of flying flock dynamics and potential social interactions influencing positioning.

Conclusions:

  • Spatial arrangements in northern bald ibis flocks are significantly influenced by the pursuit of energy-saving positions.
  • Fuzzy logic modeling is an effective tool for analyzing complex flight dynamics and inter-bird interactions.
  • This study offers insights into the interplay of aerodynamics and social behavior in avian flight.