Facial blushing and feather fluffing are indicators of emotions in domestic fowl (Gallus gallus domesticus). - Arnould, Cécile; Love, Scott A.; Piégu, Benoît; Lefort, Gaëlle; Blache, Marie-Claire; Parias, Céline; Soulet, Delphine; Lévy, Frédéric; Nowak, Raymond; Lansade, Léa; Bertin, Aline (PLoS ONE, 2024)