External acrylic or plexiglass sheets put up can help. You can use them in the inside too, but You'd probably have to have them made to fit the windows, or cut them yourself... and you still have to attach them somehow. Id use air conditioner tape, it comes in clear and colors, to attach them if you don't want to screw them in.

Lots of parrot owners on facebook say they use the blow dry film and have no issues. I've never used it. So I can't recommend or not recommend it. If you use that, just install it while he's in another room and let it air out and cure before putting him back in.

I'm in Florida. We do get prolonged cold here. But I'm a redneck about draft protection. My birds are freaked sometimes by the sight of people walking by or cars parking right near the window, and by the ambulance that regularly gets called out to pick someone up. Those flashing lights are very bright.

I wet bubble wrap and put it up, but it didn't stay. I ended up simply taping a sheet over the bottom half of the window to hold rolled up towels and blankets to the window. They protected the bottom half of the window. I have 2 curtains in the window, to block out those ambulance lights... so that helps. I cover the side of the bird cage nearest the window, too. It's not a pretty solution, but the birds don't care. I make it as neat as possible.


Since your VERY beautiful and expressive little one likes the window, I'd say, if you can afford it, have a plexiglass insert made, with silicone on the edges, find a non odor silicone.... then you can insert the plexiglass in the window and on the sill, and the silicone will keep it wedged.