I use sand as bedding in the brooder, so mine have sand since the very beginning. They dust bathe in it just fine while in the brooder, but as soon as they go outside and find other options, they are done with the sand. Even if that means dust bathing in the wood chips on the run floor 😄 I have...
I get fine brown stuff stuck to some of my eggs, too. I have exceptionally fluffy English Orpingtons that always have stuff caught in their butt fluff, especially the fine, dark brown peat moss that they have in their dust bath. When a new egg is laid, the bloom is still damp, so the fine...