Oh, I hope the roo does better.
I had forgotten that canned cat food is often a treat for my 2 month old chicks so I bought a few cans at the store and put it in a dish. Some won't touch it. They think it is nasty. While others climb over each other to get to it. They come up from the dish and have it all over their face and start picking it off of other's faces. It is so funny. Now mine do not like yogurt but canned cat food, fish flavor, has always been something most will try.
Tuna and hard boiled, mushed up egg is usually a hit. I have taken eggs, cracked them into a bowl and whipped them up for the microwave. Lightly cooked and then a touch of milk in them is good for sick birds, too. My Mottleds that get down and can't walk often get this. I always make too much and wind up sharing it with some others.