The problem with that particular corner-perch is going to be the danger of your bird(s) chewing on it, as it's definitely either been treated, or it's been "sealed" with something; it's quite obviously that it's not "Raw" Pine, because if it was it wouldn't be shiny like that. The only way raw wood becomes shiny like that is if it's either chemically-treated, or if it's sealed with something on it's exterior, like a water-sealer, a varnish, etc. I don't think there's any question that the outside of it has been either treated or sealed with some type of chemical, varnish, water-sealer, etc.
So if your bird(s) chew on it they are directly chewing on the chemical/sealer/varnish. So there's your problem.
I'd message the seller that you bought it from on Amazon, or ask your own question to the seller on Amazon, and ask them directly what the outside of the wood has been sealed or treated with, because it's definitely not "raw"...
