I found so many conflicting information about certain thing such as what to feed and handling in all the different books. The problem is, even though there are generalities, each bird has an individual personality. You can't guess what it will be because it's based on their experiences and not ours. Based on all the outdated material and reading books that often say "may" or "could" I find this forum, asking my avian vet, or doing research online for the newest information is what I rely on. I love word of mouth by other owners. This is way better than reading a book and not being able to ask questions.
Some of my birds act like it says they are supposed to and some don't. I could never have guessed what their personalities were until they're home with me for at least three months before they are comfortable going from room to room or even leaving their own room! My small ones will not leave their room without them kicking and being dragged out. They love love that room and the whole room is their forrest. I can leave that door open and no one ever runs into the screen to get out. We've even had the screen open and they're flying around but they all stay away from the door. The bigger birds are so opposite it's scary. What one eats, the other won't. One likes toys to play with in his mouth, the other wants to tear things apart.
They're like kids. You get what you get. Have questions? Come here, and ask people who REALLY CARE. Research online and call and ask your vet. It's my standard operating procedure.