Yes, during movement.
Chameleons and cephalopods can change color thanks to special chromatophore cells that respond to neural or hormonal signals. However, bird feathers lack living cells, so they cannot change color through their activity.
Hummingbirds obtain their coloration not only from colored pigments but also from light interference occurring in the barbs of their feathers. This so-called 'structural coloration' is characteristic of many birds, especially those living in tropical regions. The color of their plumage changes depending on the angle of incident light, resulting in a shimmering effect during movement.
