My last flock (5/7) got eaten by mice due to poor coop building, and I take full responsibility for that issue. After a few tweaks, wood and wiring I made the coop 99.99% predator free.( I hope). Now I just bought 6 more chicks (1-2 weeks old). I put them in a special cage where I'll take care of them til they get a little older, but my older two heard the peeping sound and rushed over to investigate. they remained calm walked around and left. I don't want to take the risk of 1 week old chicks with my older two. Are there any steps or is there any thing I can do to introduce them with out a fight?