YIKES! FEED SHORTAGE!

If you want to stick with organic, and it's just a few days, I would consider making them some nice well-soaked organic grains - nothing large that they could choke on, and I hope you have been able to give them just a tiny bit of chick grit daily.

If not (chick grit yet), I would put the well-soaked (like, at least overnight) grains into a blender and make it into a moistened mash. Then they won't need to "chew" it.

Here are the ingredients in Scratch n Peck's organic starter to give you some ideas. Organic Wheat, Organic Peas, Organic Barley, Organic Linseed Meal, Fish Meal, Organic Sesame Meal, Vitamin and Mineral Pre-mix, Ground Limestone, Organic Vegetable Oil

So you can probably find some wheat seeds, barley, sesame, maybe just a little flax, and then put poultry vitamins in their water tomorrow. You just need enough for a couple of days. An important part would be making sure it's fine enough, and soaking it will help soften it and I have been told it can actually release more nutrients that way.

@Cherib603