I did not mis-type that Title… cats are not the only ones who enjoy having trees indoors. I have it on good authority that Quark and Boson like perching on indoor plants. Last year, I posted a blog about how an ambitious woman took the tree above and made a cat tree.
HOWEVER, using similar techniques, that tree could have become something for birds and since birds don’t need lounging platforms, would have been easier to construct. The main thing I would do, if constructing a bird tree would be make sure its base is sturdy enough so it won’t tip and have a place to put newspaper for easy cleaning.