going for it!

[Jessica Loesch]

For arboreal species, it is recommended you use cork bark for a climbing surface.

Here is my versi's setup

the lid is off, but you get the picture.
this is because cork bark does not mold, but other things may.

Avics are great starters, if you do your research and are careful. They are a bit more fragile but would lead you into the OW nicely.