I'm so sorry for the huge loss of your beloved Jasper and also Hank. I too don't know much about your beautiful birds but I do know from these threads that he was so loved and that you are so greatly respected.
Yes, the silence is deafening (this, I found, was extremely hard to deal with) but every word they said, every whistle, every funny little thing they did and their lifelong love for you and, of course their grumpy moments will indeed stay in your heart and mind forever, until you are reunited with them. Sometimes these memories make you smile and chuckle and sometimes they break your heart all over again but they are memories.Memories to me are like a golden chain that joins us until we meet again and as long as we have those, then I believe the person or animal/bird that we have lost will never really die because they live on in our hearts.
My thoughts are with you at this very sad time x I too would love to hear more about Jasper when you are able.... x