The attributes listed in this thread are the experiences of each individual and your experiences may differ with your individual bird.
I obtained Rowdy from a local pet store when she was 8 months old. She will be 13 in less than a month. I hadn't planned on buying a parrot that day, but had been doing research for awhile and conures were high on my list of possible birds. I happened to go into that store for their after Christmas tack sale, but was chosen by a bird instead. Now I don't necessarily recommend getting a bird spontaneously, but it all worked out. However I did have to drive her from there to another pet store that cold December evening to find her a cage
The one I got her from had cages for large parrots (bar spacing was too large) and those tiny, cheap budgie cages. Planning for your new bird by having a cage and supplies is probably the better way to do it
My new parrot came into my home as if she had always lived here. Within an hour of settling her into her new cage she asked to share dinner with me. I was amazed to discover a little bird could eat half a serving of veggies
Still, life with Rowdy wasn't the easiest adjustment. She was very happy to be with me, but didn't have the foggiest idea of how to properly interact with her new human companion and would just start biting and gnawing on my hands or any part of me she could get hold of. I didn't have the internet back then for advice and the books I bought on parrot behavior were not as helpful as I had hoped they would be. It took me a long time to figure out that she wasn't biting for most of the common reasons parrots bite like fear or anger, but rather she seemed to view me the same way as a toy or perch. My hands and arms resembled tree branches apparently. It also took me awhile to figure out how to curb that behavior. The hand "wobble" she found amusing and then bit me to get her amusement park ride. Finally I figured out I needed to ignore her for it since being with me was obviously what she wanted most. So setting her down on a table top play gym and not looking at her or speaking to her for a couple of minutes was my best option. Then I would allow her back with me, but the moment she began chewing on my flesh, back on the stand to be ignored she went. After a few days she understood
She is my moodiest and most temperamental bird. She can change moods every 2 minutes
She is very territorial and for a long time I had to put her into her carrier to scrub down her cage and toys and perches if I didn't want to be attacked for it. I was very grateful for outside feeding doors on the cage. She doesn't just claim her cage and play gyms; she has claimed this entire room. Any time I bring anything in she doesn't want in her she screeches bloody murder. And yes, Nandays have a very loud, obnoxious screech and can screech several times a day. She screeches when I clean, anytime someone pulls in the driveway, anytime a guest comes in, and then every time the guest even moves for the first day s/he is visiting. She screeches because I walked across the room with a screwdriver. I can't help but notice though she doesn't screech about things she actually wants though, like that new, big screen TV I bought 2 years ago
She is very jealous of the phone. She screeches anytime it rings or I am talking to someone. Last summer I answered it while she was out of her cage and she flew at my face and latched onto my bottom lip. She hung from my lip, piercing and grinding and I nearly had to pry her beak open to get her off. She also hates the camera and has ripped that out of my hands and thrown it on the floor so many times it is now held together with packing tape.
Mostly she enjoys having other people come over, and is probably my friendliest bird with strangers. She likes most people. These days she also gets along pretty well with other birds, but that hasn't always been true. However, she will think nothing of biting Pete, who outweighs her by nearly 400g, and it's good for her that s a big baby because if he were to retaliate, it would be very, very bad.
She is bold, hyperactive,curious, easily distracted, demanding and loud. She can also be cuddly when she wants to be, but not anywhere near as much as most conures. She really likes to preen hair, but she also tries to remove my freckles and still doesn't seem to get that they don't come off. Because of her I learned I have a freckle in my right ear canal
She doesn't give a lot of warning that she doesn't want to do this or that. If I'm lucky she will say, "Unh!" at me to let me know that no, she doesn't want to step up.
She is an excellent eater and will eat nearly anything. She also demands whatever I'm eating every time I eat. She has learned though "Not birdie food" means she won't be getting certain things that wouldn't be good for her.
She is my most likely parrot to contact call. Years ago I taught her to say, "Hey hey" instead of screech and so she usually does do that.
Noise is probably the biggest drawback for owning a Nanday. They alarm screech, contact call, make a variety of other loud chirps and sounds (including one that sounds like "Uh oh! Uh oh!". If you or anyone in your family does not like loud, obnoxious sounds, or you live in an apartment or have close neighbors who might complain, this is not the species for you
She is good at entertaining herself though and loves all kinds of toys. So if you work, a conure might make a good bird as she doesn't seem to require as much interaction from me as my other birds do. Just provide a LOT of things for the bird to do.
Vocabulary wise she is the best talker of any bird I've had. She says new, appropriate things almost every day. Sometimes she tells me paragraphs of stuff, and goes on and on. But, she is not always easy to understand. Sometimes she is quite clear and has good volume, and other times she is muttering and I can't make any sense out of what she is saying.