When mine were that young I boiled eggs and gve it too them and also you can get dry cat food or can if you like and let them have that also as its very high in proteirn too...Mine loved the can type and would almost fight over it. The loved the egg yolks too and tomatoes too cut into little pieces. I saw you made a bigger space for them too, if mine got to hot they started in on some of the littler chicks. I didnt put mine out till they were almost 3 mths old too, but gave them grass clippings all the time and checked their feeders too. If you decide to not use the cat food you can get game starter to feed them and check the tag to see the protein content and see if its 24 % or more. Some places call it turkey starter or duck starter/grower. They have to have higher protein. I would just crush the dry food and add to the feed. It dont have to be expensive cat food either. Good luck