FYI, you really shouldn’t give them dairy because their systems can’t process the lactose and it can possibly upset their stomachs, causing diarrhea. So if you decide to give you chickens yogurt or any other dairy product, watch them carefully.
I didn’t see any ill affects from the yogurt. And they really, really loved it.
Caution: Make sure you stand back when you give it to them. This stuff really flies when they eat it.