Bertin, A., Cornilleau, F., Lemarchand, J. et al. 2018. Are there facial indicators of positive emotions in birds? A first exploration in Japanese quail. Behavioural Processes 157, 470-473.
The positive aspect of emotions, like pleasure, remains overlooked in birds. Our aim was to contribute to the exploration of facial indicators of positive emotions. To observe contrasting emotional expressions, we used two lines of...