Thank you for this article, which clearly explains how to put down a bird. I was worrying over the inevitable end of my pets and this is definitely going to be the way they leave the world when it is time. I already did something similar with my fish and it was way easier than decapitating him like some people suggested. It is calming to me that they are still in one piece at the end...
We left him in for a couple hours.Just to be sure he was gone. Then opened and walked away to let it air out... he had not moved from when slid him in.