Hi LittleLadyJessie
Those are called caecotrophs droppings (or cecals) and these are the ones that rabbits re-ingest to get important nutrients and good bacteria for the gut. Sometimes you’ll see excess ones like this. A lot of excess can be caused from too rich a diet which is why we have to be careful with treats. When the cecals are mush and unformed (not in the grape-like cluster) this tells us there might be an imbalance in their gut.
If you’ve been seeing more cecals since introducing the treats, you may need to reduce amount a little. I’ve seen that brand before but they don’t seem to list the ingredients. I did find one site that listed “cereal” as the main ingredient. I suspect that are mainly corn based which isn’t great… I know that brand makes fenugreek crunchies which are very popular with rabbits and they are predominantly corn.
What is the rest of your rabbits diet?
I noticed in the photo the shavings in the cage. Does your rabbit use a litter box? You can do away with shavings or any bedding type products in the cage. The buns are more likely to only toilet in the litter box that way. Makes it a breeze for cleaning the cage also!!