Well, I did it. I adopted 2 older kittens (6 and 9 months old - spayed but need booster shots next week) through an amazing adoption agency that basically rescues kittens from shelters right before their euthanasia date approaches. Dora and Dottie (I didn't name them but the names seemed to fit!) are no special breed -- just simple domestic short hair cats (Dora is a white with some grey tabby markings and Dottie is a pastel calico -- both are mostly white. It took them a couple days to bond, but both had past experience with other kittens and dogs so within 36 hours they learned to play well together and bonded. It was a risk to adopt not knowing if they would easily bond or if it would take a LOT of work on my part. I basically just acted like I didn't care at all and let them work it out -- and things went great! Their youth probably helped. I've always preferred pedigreed longer haired cats (Persian/Himalayan) or longer haired domestics, but I think their short hair status will make grooming much easier on me (and they are adorable just as they are!!!).
Snickers adores them -- watches them intently and will head bob and whistle when they are running wild! It never occurred to me that maybe he misses Zuri. Snickers time out of cage is much more limited while we work things out -- but he doesn't seem like he wants to go after them. I am basically letting him just play on play gym on top of his cage and (when kittens are sleeping) holding him VERY protectively on sofa -- since sleeping kittens could awaken quickly with a parrot loose in home. I put a metal grated fireplace screen around his cage for cat protection and to discourage them from poking their arms inside his cage; but they have actually been remarkably respectful of him. After 22 years, Snickers understands cats, and in the past, has proved his trustworthiness. I think he gets they are just babies who mean no harm. But I will never trust a parrot and cat together, loose, without extreme supervision (which I haven't tried yet -- only had the kittens 1 week). Too soon.
These kittens (I find them gorgeous) but they are probably just run-of-the-mill common cats; but they have brought some joy back into my home. And they look absolutely NOTHING like Zuri, which I appreciate. Their energy levels amaze me! I got them a new cat tree, beds, scratching post, Cat Dancer toys, soft toys that squeak like a mouse, a globe than rolls itself (batteries) and a wand-type feather toy I have to swing about for them. I wanted them to have things that didn't belong to previous cats. Even at such older-kitten ages, the play hard but sleep like the dead (sleeping time is Snickers the CAG out-of-cage-time) here. But if a kitten awakens, I put him back up.
The new kittens can't erase my grief, but it does bring some activity and joy back to this home. And I can't get over Snicker's whistling and playfulness with them around either -- he seems to delight in the new cat television in living room. Snickers is definitely not bored during cage time. lol