Is that possible? My hen had a sour crop, I massaged it and she threw up three different times, about 12 hours apart. She was in the kennel and I keep massaging thinking she had an impacted crop, but I only felt something that felt like it had grit or sand in it, no hard or fiberous lump. She stopped eating while in the cage and I tried putting her back with the others and she immediately perked up and ate some boiled egg yoke. I think she was depressed in the cage and if I was massaging her gizzard I don't blame her. So can the crop feel "gritty" or is it possible that was her gizzard? Nothing like a chicken to make me feel like an idiot!