Thank you... Today I took Pix's (frozen) body to the vet's office to get him cremated and given back in a little cedar box. I cried again

it was hard to unwrap him a little so that I could reach in and pull out his 2 longest tail feathers to keep. I just didn't think about doing it before last minute.
I was talking to one of the girls there, and I told her as bonded as Pix and Twigs were, surprisingly, Twigs really didn't look like he was mourning. I just 'assumed' he was sad. Angie told me that most likely Twigs just "knew" his buddy was not well and declining, and had already "accepted it". Especially since we had to get Pix his own cage after the vets ordered the diet, instead of living together they got side by side cages. She thinks that Twigs must have known it was coming by watching his buddy, and instinctively knew it was near his last day, and was "prepared" in the way birds do, and just accepted it and went on.
Different from when a mate is suddenly removed, and they think 'what happened? Where is he?!' Then they get depressed when they don't think they're coming back. I think she's right. Makes sense.
Nonetheless, with Twigs in the room with the parrots now, I'm really working on "getting to know him better" since he was always the wild one. He's pretty skittish and hyper unlike Pix was, although we bought them at the same time. Twigs will step up, but I'm not sure he'll ever get as tame as Pix was. He just has a different nature about him. I'd really love to get him his own flight cage, but space is at a premium now until certain things change.