Well, I have one Jenday, and while I haven't owned any other birds besides two cockatiels, I'll inform you the best I can!
Mine is the same size as other suns that I've met, maybe a little smaller, and of the same build. The colors on her are very very bright! I especially love the blue on her flight feathers, which I'm letting grow out, and the deep red on her belly that you don't see as much in suns.
She is high energy, so I keep about six toys in her cage (a plush angry bird, swing/hoop, foraging chewie, and three small plastic toys.) She also has some foot toys to play with when she's out. She is well behaved though and will keep herself entertained all day when i'm at school, and even will play by herself when I'm workign on something and she's in the cage.
As for screaming, she is loud, I won't deny that. I haven't heard her real scream since about the time I've purchased her - instead she just imitates my whistling because that's how I call to her. It's not exactly a pleasant sound, but I'm proud to say that she rarely screams. Only when I call to her when I get home, and occasionally if she hears me in another room.
One habit we're working through right now is biting - she has good days and bad when she'll get sensitive about me trying to touch her wings, flipping her over, and generally just trying to get her socialized. She's never drawn blood, I don't think she is able to, but it DOES hurt. We are working through it though, and it is a new phase.
She's very smart, too. (Ah! I'm rambling! But I'm proud of this.
) We've been working on trick training for the past two weeks and she knows already to step up (well...she knew this one.), wave, nod her head, play dead, and we're working on her target training and circle! Vocally the breed isn't strong (this is what I've heard) and she isn't very good at speaking, but when she gets new food in the morning she can be talkative and she does imitate my whistling, clucking, "yea", my singing (it makes me look bad!) and is working on a very rough version of her name at the moment. It's cute to see her trying and experimenting with the sounds.
I'm not a bird expert by any means, but if you have any questions on my personal experience (I've had my bird for about seven months now.) feel free to drop me a message.
I don't know if you have instagram (for iphone or ipod) but I have an account devoted to only photos of her under the same account as my user name.
That's a lot of images that should give you an idea of her personality.
Whew! That was a lot. Hopefully some of it helps.
I would recommend one, by the way.
- Mango & Her Human