I would be concerned about a few things. One those swelling after they were ingested, two, the birds getting VERY sick from lack of vitamins and nutrition and minerals. I've had deficiency in my flock and it's AWFUL. You are A LOT BETTER OFF FEEDING A BALANCED CHICK STARTER FEED. you can get this food at most feed stores, tractor supply stores or online. it is NOT expensive for a large bag. this way you know that you are feeding a COMPLETE meal with a perfect balance of vitamin,mineral, amino acids, and all they need to grow healthy. you can NOT get the nutrients they need from a few seeds it MUST be balanced! PLEASE listen to my warning. Vitamin defiencys can render them unable to walk and even cause death. you start with the feed called Chick starter then when they get older and begin to lay get Layer feed. I really hope this helps you out.