If you do get a second one, I'd try and keep it as the same sex. Trying to prevent birds from mating can be damn near impossible when they're determined, hahaha. But you'll honestly never know until it happens. I brought home a second bird about two weeks ago, an Indian Ringneck. I was concerned that they'd hate each other and it'd be so difficult to manage, but honestly... it's not.
They don't "hate" each other, rather Avery is intrigued by Shiko and Shiko is a big blue bully. I won't let them get close to each other because Shiko has no problem taking a big chomp out of Avery, but I do have them out together when I'm nearby. Preferably when my boyfriend is home, so that I can have Avery while he has Shiko and then alternate.
If you do want another bird though, make sure it's for you. I have two cages I clean daily, two birds I prepare food for, and two birds I make sure I spend at least four hours a day with including trick training for both of them to strengthen our bond. But, because I wanted Shiko and was prepared for it, it doesn't feel like it's that much more work. If anything, I'm more willing to clean both cages because I hate clutter or mess, and I love preparing food for them and it's much easier to make now that I can make larger portions, and trick training is quite fun with them. They're both a joy to work with.
I mean, if anything, Avery's bond with me has strengthened since my new addition... which is quite odd to me considering that she adores other birds. I think it's because she knows Shiko can pick on her and knows that I'll swoop in to save the day. So you'll never know what will happen until it happens, and if you're prepared to deal with two birds who love each other more than you, or two birds who hate each other's guts, then go for it. Not saying it will happen, but always be prepared for worst case scenario.
