In a recent study into animal emotional intelligence, researchers found that not only do chickens express their frustrations through facial blushing and feather-fluffing, but also their fondness for their handlers and their excitement for a little treat. And for each emotional state, their combs and jowls either grow red with excitement or wane pleasantly pink with calm.

“When presented with appetizing feed such as mealworms, the hens did get a bit red but their entire face became scarlet red during negative experiences such as capture. In contrast when they were at rest, their skin appeared much lighter in color,” said the National Research Institute for Agriculture, Food and Environment in a recent release.