Facial display and blushing: Means of visual communication in blue-and-yellow macaws (Ara Ararauna)? Bertin, Aline ; Beraud, Arielle ; Lansade, Léa ; Blache, Marie-Claire ; Diot, Amandine ; Mulot, Baptiste ; Arnould, Cécile Abstract Publication: PLoS ONE Pub Date: August 2018 DOI: 10.1371/journal.pone.0201762 Bibcode: 2018PLoSO..1301762B