I have a seperate bird room and love it. It functional and great. Both of my birds like their privacy. They don't like to constantly be out with everyone, and like the fact that it can get nice and quiet my closing a door.
There are windows on every side except one wall. The windows look out onto the back yard, so the birds can enjoy themselves watching us eat outside, etc...
Instead of using a plain door, we have a half a french door (you know french doors, well, this one is just like it but only oe door). With this, the birds can watch us and we can watch them, but it can get quiet if Harley is being loud or if we have company over. Most of the time, the door is open, so it's a win-win situation.
However, maybe, if you could afford it, do the sliding glass that goes into walls. If your house is getting too loud for them, close the glass doors. They can see out, you can see in, but it's quiet. Unfortunatly, these can get pretty expensive.
However, using the fake plants is also a great idea! But, I thought I would toss in another one
