My chicks are 5 weeks old. I have a constant supply of new, clean, medicated feed, appropriate for their age as well as a sand box filled with construction sand. Since they spend almost every moment of daylight outdoors, they frequently feast on flies and lately, a lot of japanese beetles which they catch and eat. Twice a week, I give them a can of tuna, (packed in spring water), I give them rinsed yard clippings (grass and pansies only. No weeds), as well as whatever wild growing clover I come across. When it's really hot out, I'll let them have a bit of yogurt, watermelon, apples or grapes. I clean their water feeders and fill them with fresh water in the morning and in the evening. They are growing and I can't find anything wrong with them but, they never seem to get full. They act as if they are starving to death. They try to take the food out of each others mouths even though there is more than enough food right before them. Please tell me what I'm overlooking!