An introduction...and a question about picky eaters...

Hi everyone. I have been reading articles on this site and reading the forums for a while. I have to admit, I'm so overwhelmed with information that my head is spinning.

A little background. I am a mom of 5. My older four children are ranged 26-18. My youngest will be 9 next month. She has profound developmental delays. Caring for her is a full time job in itself. While I love her to pieces, I've found that the absence of her siblings on a day to day basis has been too quiet around here.

My husband and I have been talking about having chickens for a few years...Just talking. But this year, it seems the quietness of our house finally led us into buying our first little family of chicks. We live in a village with rules, and although we sit on 3/4 of an acre of land our hens won't be able to free range.

We are only limited to 6 chickens. No roosters. Hopefully we didn't get any roosters because I don't want to have go give any of them up. We have 2 Leghorns, 2 Rhode Island Reds, an amber sex link, and a black sex link. They will be 4 weeks old tomorrow. We have kept them in a recycled pond liner with a heating bulb.

When they were two weeks old, I started giving them grit and mealworms. But since then they don't seem to want anything but their feed and mealworms. They aren't interested in any other treats. Is this a problem? Shouldn't they instinctively want to eat veggies or greens?