Its pretty easy to buy a twisted corrugated stainless chilling coil here in Poland for about 20 dollars as shown in this p i c t u r e b i m b e r k e g abrateknajwyzszajakoscCID 628 ID 8 Edin . html # 0724 c 5 e 500 <| sep |> You would have to actually go to the store and fight with crowds . Forget that . Edit Never mind , looks like they were available online for that price . Sold out , though . <| sep |> TED Radio Hour and How I Built This , both shows are really informative plus Guy Raz speaks in a very relaxed tone and asks great questions . <| sep |> My birds are very quiet at night , turning the light off in the room literally turns them off as well . During the day they are loud . This is true with pretty much every type of parrot , they don ' t want to give their location away to predators at night . I don ' t know why you think soundproofing is neccesary for night time .