Gosh, I can't get any game bird starter here in Oz. Everywhere I look the best I can get is %25 protein turkey feed, so I am doing my own and getting approx %40 + protein.
I use 1/3 hand rearing mix with 2/3 high protein egg and biscuit mix. I use it for my canaries and they all love it.
I give it to all my birds everyday. Canaries and Buttons.
My canaries feed their babies and they grow faster than all my other canary friends can believe - so will use it with my button chicks when they hatch.
Just wish we had the stuff you guys have in the US, would make life easier.
P.S. They also get daily finch seed, chopped fresh greens, fruit slices and shell grit. Every third day they get either hard boiled egg or meal worms as an extra treat.