Facial blushing and feather fluffing are indicators of emotions in domestic fowl (Gallus gallus domesticus)
Fig 1
Profiles of a hen showing different feather positions and skin redness, and the four regions of interest where redness was sampled.
(a) Illustration of the four region of interest (arrows). (b) Locations where skin redness was sampled (black squares, 10 x 10 pixels squares). (b,c) Location where feathers’ position was observed (blue rectangle). Figures illustrate Eden (Meusienne hen) with (a, b) feathers labelled as sleeked or (c) fluffed and with (a) low or (b, c) high skin redness. Pictures are extracted from (a) Resting, (b) Capture, and (c) Dustbathing situations.