Parrotlets have a reputation of not liking other FIDS, I think they tend to get very jealous. Definitely do your homework before buying one of those little darlings. One parrotlet site states:
Although parrotlets enjoy being around lots of different people, they do not always enjoy interaction with other birds. Very often a parrotlet, especially a Pacific, will attack much larger birds without regard for their own small size. Particularly when they become mature enough to breed, they can become especially hostile toward other birds. Parrotlets have been reported to attack much larger birds. For example, I've heard of a parrotlet attack a Rosella more than three times her size, which resulted in the Rosella losing a toe. Do not allow parrotlets to be unsupervised around other birds.
I have also read similar things in other sources including Parrots for Dummies. Not to rain on your parade, just something to consider.
I thought that our Connie would absolutely love Sammy, she is also a yellow sided GCC, but although she's made deceptive beckoning gestures to Ollie and Sammy (and Ollile is too powerful for me to let them come in direct contact)--she has tried to attack Sammy although he's made no threatening gestures to her at all.
Although I hate to give advice in this matter, I feel I must give a word of caution. People warned me to get another bird because I wanted one, not because I wanted a friend for Connie. Although I picked the species that seemed best for us, another Conure to boot, Connie hates Sammy (most likely a little birdie rivalry going on there). Get another bird first and foremost because you want another friend. That having been said I think they do benefit from living near one and the flock-like environment even if they don't want to play and preen one another it does them good to be a family. I did a lot of research before we got Sammy and he was selected among many other choices because of the Blue Crown Conure's well deserved reputation of being mello and non-aggressive.
