I watched a hen dust herself Friday. She had some light cover between us and was about 15 yards away. Funny though because I wasn't sure what she was doing. First I thought she might be laying an egg. She'd flop around and squat like she needed a c-section. After lots of struggling, she just tipped over like she was dead.
Then picked her head up and looked around. Kept that up for several minutes. After she left, I went over expecting to see a nest, but it was a dusting spot. Joke was on me!