In a study titled "Chickens prefer beautiful humans", human faces were photographed and digitised, so they could be presented to undergraduates, who then rated them according to attractiveness. The male faces were rated by female students and vice versa. They came up with a gradation of the most and least attractive. Then chickens were presented with the same faces and strikingly, the chickens' preferences in binary choices, for whatever reason, showed a 98 per cent overlap with the humans' ratings.-- Jonathan Balcombe
It doesn't necessarily mean that the chickens found those faces more attractive – though that's what the authors seem to suggest. What meaning that has in a chicken's world I don't know. But what it does say to me is that they're very perceptive about cues and those perceptions are very similar to ours in terms of aesthetics.