Optimism remains in chickens in enriched environments despite exposure to stress

(Linköping University) 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, according to a new study published in Scientific Reports. A team of researchers lead by researchers from Linköping University, Sweden, measured how optimism in chickens is affected by stress.