Any idea why they wouldn't like the oats and peas? I have 8 birds: 2 mature (one laying one that won't) and 6 young hens that are due to start laying within the next month or so. Should I be feed in them layer pellets instead or also? I free range my birds as well in about a 2500 sq ft. yard also and they to eats lots of forage and insects.
Not sure if you figured this out yet, but yes, you should feed some layer feed. Scratch is only a treat...it doesn't have complete nutrition for chickens. That may have been why they were picking through the scratch.
How are your birds doing now?