“Budgies” also find yawns contagious
Analyses suggest that the clustering of these behaviors is due to social influence. If the birds saw their neighbor stretching and yawning, it cued them to do the same. This study provides the first detailed description of temporal patterns of yawning under social conditions as well as the first support for contagious yawning and stretching in a non-primate species in a natural context.
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