Branches For a Quail Cage

[ChattermaxQuail]

Hi everyone!
I used to have some quail in an outdoor cage with grass. I would often give them branches from wattle trees, which they enjoyed hiding under.
My latest lot of quail live inside, in a sort of deep litter style cage.
I tried giving them the same branches, but they just ate the leaves. I removed the branch as I didn't know if they were safe to eat or not.
I've heard that Apple branches are good, but will it be ok if quail eat the leaves?

 

[Nabiki]

I'm not sure about wattle, but apple branches are fine and the leaves aren't toxic.