I don't think the oil in water will do much good. Since oil would float on the water, the bird wouldn't be swallowing nearly enough. If you want to oil treat the entire flock, I would mix up some of their crumbles with oil mixed in.
If you can find coconut oil that is unrefined with the nice coconut flavor still in it, you can put a cup of it into a bowl and let them eat it straight. They love the flavor.
If you can find coconut oil that is unrefined with the nice coconut flavor still in it, you can put a cup of it into a bowl and let them eat it straight. They love the flavor.