So, /u/lurkyturkyducken wants to grow their own chicken feed. They've got the land. They've got the climate. Their hens are already living the dream, scratching for bugs and gobbling worms. They're even saving eggshells for calcium. That's a lot of self-sufficiency. And now they're staring at a bag of seeds, wondering how to turn it into a balanced buffet. We feel that. It's the kind of question that makes you realize how easy a bag of commercial crumbles is. The kind that also makes you want to run a little farmstead math.
You can absolutely do this. But you cannot wing it. Chickens are not garbage disposals with feathers. A diet built entirely on, say, corn will turn them into fat, lazy birds with pale yolks and bad attitudes. They need protein for eggs and muscle. They need amino acids. They need the right balance of energy and fiber. The good news is you have a huge advantage: your birds already free range. That means they're supplementing their diet with insects, which are nature's perfect protein pellets. That takes pressure off your seed mix.
The practical path starts with understanding what a complete layer feed provides, and then reverse-engineering it from what you can grow. Commercial feed typically aims for about 16 percent protein. Soif your free-ranging hens are snacking on bugs, you can probably lower that to 12 or 14 percent from your homegrown seeds. A good starting blend might be a base of wheat or oats for carbohydrates, plus a legume like field peas or soybeans to punch up the protein. Sunflower seeds add fat and amino acids. You don't need a PhD in avian nutrition. You need a notebook and a willingness to test a small batch first.
What we'd tell a reader asking this in person: start with one crop this year. Get good at it. Add another next season. See how your flock responds, their egg production, feather condition, and energy levels will tell you more than any spreadsheet. And don't forget to grind or crack the seeds. Whole grains pass through a chicken's system mostly undigested if they're not pecking all day. You've got the land and the drive. Now take it one seed at a time. The cluck-tastic balanced buffet is within reach, but it won't build itself.