Ursula certainly enjoyed them. I'm thinking the 10-15% per prey item might not apply to fowl as it does rodents because these were 40g quail and Ursula at 500g had a hard time swallowing them. I don't think that shag at 200g could have done it. I'm thinking it is because fowl are more round and spherical instead of long and cylindrical like a rodent. Anyone else notice this?