Also something interesting to note: geese don’t have a crop.I really don’t like giving any of my birds dairy because it makes me nervous that if any trace of it gets stuck in their crop it will sour so I would really much rather not give them any probiotics.
They have a modified throat that can expand and work sort of similarly to a crop, but it isn’t a crop and won’t hold food as long.
Geese can get yeast infections like sour crop though, usually as a result of some sort of gastrointestinal issue further down that’s slowing their digestion.