|Louis (left) and James (right).|
I bet that Louis is the squirmiest Budgerigar that you'll ever see. And when we first got him, he broke his tail against the bars of the cage. In fact, you can see it in that picture to the left of this writing.
James is weird. He kinda flip-flops in between biting you and not biting you if you stick your hand in the cage. If he's stressed, sometimes he'll even fluff up and rush at your hand!
I'm not exactly sure about their ages/gender, but I'm pretty sure that they're both at least 8-9 months old. James is totally a boy, but I'm not sure about Louis. I think he's a boy, too.
You can tell a Budgerigar's gender by the cere, or, for you non-birdlovers, the little bit of skin covering the nostrils. On a boy it's neon blue, but on a girl it can be pink or brown. And as your bird gets older, his/her cere will begin to look crusty, but do not fear! It's completely normal. And if he/she grows little things that look like pepper, it means he/she's molting. And he/she'll get kinda moody, so you won't wanna take it out for a while. But when it's done molting (6 weeks or so), feel free you handle him/her again!