Congratulations on the new birdies!
They are both pretty birds, I love their colors.
We have had T-bird for almost 3 years now and she and Samantha have never had any problems.
T-bird has the same exact cage that your birds have.
Did you add a cuttle bone and some spray millet seed?
T-bird was very shy the first few days and we were worried that she wasn't eating but she did fine once she settled in.
The spray millet is probably the first thing they will want to eat.
Let me know if you have any more cat-bird related questions, I can probably help you there.