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Updated: Apr 8, 2026
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Thermal Imaging to Study Stress Non-invasively in Unrestrained Birds
Published on: November 6, 2015
14.2K
Eye surface temperature detects stress response in budgerigars (Melopsittacus undulatus)
Yuko Ikkatai1, Shigeru Watanabe
1aDepartment of Psychology, Keio University, Tokyo bDepartment of Humanities and Sociology, Aichi University, Toyohashi, Aichi, Japan.
Neuroreport
|June 24, 2015
Summary
Stress increases body temperature in animals. This study found that budgerigar eye surface temperature correlates with cloacal temperature and rises with handling stress, suggesting it as a non-invasive stress indicator.
Area of Science:
- Animal physiology
- Neuroscience research
- Avian stress response
Background:
- Stressors can elevate both core and surface body temperatures in animals.
- The utility of surface temperature as a proxy for core body temperature in birds is not well-established.
- Budgerigars are valuable models for studying neural mechanisms.
Purpose of the Study:
- To investigate if surface temperature reflects a stress response in budgerigars.
- To determine if budgerigar eye surface temperature can serve as an alternative measure for core body temperature.
- To explore novel physiological measurement techniques for neuroscience research.
Main Methods:
- Correlating cloacal temperature with eye surface temperature in budgerigars.
- Measuring changes in eye surface temperature following handling stress.
- Utilizing budgerigars as animal models for physiological stress studies.
Main Results:
- A significant correlation was observed between cloacal temperature and eye surface temperature.
- Eye surface temperature showed a notable increase after a period of handling stress.
- Budgerigar eye surface temperature is closely linked to core body temperature.
Conclusions:
- Budgerigar eye surface temperature is a reliable indicator of cloacal temperature.
- Eye surface temperature can be used to measure stress responses in budgerigars.
- This finding offers a non-invasive method for physiological monitoring in avian research.
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