I have got 34 young birds that I want to race this year I had that problem they were sitting about on the roof pecking out the gutter so I cut the food back in the morning I give them 1 scoop which is roughly 250 grams that's after they fly For about an hour I let them back out at night they fly for another hour then I feed them 2 scoops which is 500 grams so they are roughly getting 3 quarters of an ounce each I think I have found that in the morning I can put my hand out with food and they will eat out my hand does that mean I am not feeding enough the birds feel good and are flying well