I completely agree with Abigail.
My daughter had a budgie, blueberry. We kept him flighted. One day while we were gone shopping he got out through a bathroom window we would crack open. The window swung out from the bottom, and we didn't know it wasn't latched, it looked closed from below, where we were. When we got home he wasn't there, and it was the only thing we could think of. It was terrible.
A couple months later I got a new bird, a cockatiel we name peetree.
I had him 6 years.
One day I put him out on the grass in his cage. I didn't realize my 2 year old went to give him a cracker. Instead of putting it through the bars she opened the door.
He flew away.
I will never have another flighted bird.
No one could ever change my mind, because I never want to ever go running after my bird, hearing it scream in fear, as it flies farther away. Never to be found again.
It still utterly breaks my heart and I can't forgive myself for not trying harder to find him.
My life has never been the same without him.
But now I know. Flighted may have good things, but the one bad thing that can happen.... Nothing can change it when it does.
You'd think I would have learned with my first bird.
But I thought it was cruel to have a bird and to cut its flight feathers.
So I kept peetree on. And for 6 years everything was fine.
Until that day. When a 2 year old made a simple mistake out of kindness.
So... You may feel guilty, but at least your not dumb like I was. You were innocent, and it seems you learned.... Quicker then I did.