I have 6 chicks (3 RIR and 3 BO) and they are 5 weeks old, I keep their feeder full of starter feed at all times. When I go to check on them which is often. Ill give them a little hand full of either oats, dried Mill worms or a few crickets. I have bearded dragons so if I have Crickets on hand I share. They go nuts with the crickets. The crickets aren't full size only 1/2", they eat them much faster now then when they were only a few weeks old. I make sure they have grit access to help digest all these treats. They are very spoiled. Cant wait to get them outside once the coop and run is built and secured hopefully soon as they are growing fast.