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Avics (including Caribena Ybapoyra and all that) aren't like any other arboreal, they solely live up high. Most others that setup is fine as they will just live on and under that cork bark. For you're Versi you have absolutely nothing at the top of the enclosure. It needs loads of hiding places up top. Get a piece of cork bark that runs to nearly the top and attach fake plants to the top of it so it's all basically touching the top of the enclosure. These will do fine on basically dry substrate. In that enclosure I would provide at least 2 water dishes one on the ground at the base of the cork bark and try attach one half way up the enclosure somewhere.