<< Chickens that grow up in an environment that they perceive as more diverse and manageable, retain an optimistic view of life and cope with stress better than individuals that grow up in more sterile surroundings >>
Linkoping University. Chickens remain optimistic in enriched environments despite exposure to stress. Apr 6, 2018.
Josefina Zidar, Irene Campderrich, et al. Environmental complexity buffers against stress-induced negative judgement bias in female chickens. Scientific Reports. 2018; 8 (5404). doi: 10.1038/s41598-018-23545-6
Mar 29, 2018.