I mean from "Baby chicks" to.... ? They grow so fast. Here's at three weeks: And here's at four: I am so proud of my fuzzy butts. They've done so well. No casualties so far and growing so plump and nicely. But the original question was - when do they stop belonging to the "Baby Chicks" board? P.S. I miss having baby chicks already. Thinking of getting some baby ducks now.