These are about 5 or 6 weeks old. I purchased them @ almost a week old on June 17th. I had to put a top on the feeder because they were flying in and eating out of the top. Opportunists, they are. No bugs in that pen. HEHE We have 8 Ameraucanas and 4 Rhode Island Reds. Plus we have 6 chicks less than a week old in a separate brooding box I made.