I did a crop check yesterday morning and found one of my silkie's crop was quite large. However, I thought it might have been some Koop Clean or grit she picked up in the coop before I let them out. So I swept out all the hay and had a completely clean floor last night. This morning I checked her and it was no longer bulging like it was last night when she went to bed, but I can still feel a small hard ball. I separated her and put her in a cage with only water and grit. Did I do the right thing? Are there some chickens whose crop can always be somewhat felt?