Lena, what you went through with Cherryk completely broke my heart, I can feel your pain and I am so sorry for what you are going through! But like everyone has said, you can't blame yourself. It was an accident and Cherryk knows that, I'm sure of it!
When you said that you felt the exact moment when you think Cherryk was passing away, that claustrophobic feeling, I started crying for you and I still am...because I have felt this before myself. I don't want to get into my sad story about losing a pet, it is too painful.
I hope you are feeling better. Let us know!
Also, veggiegirl, I am deeply saddened to hear about Peggy! I've never owned a pet bird, but we have some wild Black Phoebes who nest above our garage door every single year, and are ALWAYS in our yard & pond, so they feel just like pets to us...and I would be devastated to ever see anything happen to them! We have a lot of falcons and hawks around here too, I never even thought that they might prey on other birds. :( Ill be worried about "my" birds so much more now!