I just got a budgie, and though I've looked up online how to tell the gender, I'm still unsure having nothing to really compare to. The Petsmart I got her/him from didn't know the age or gender. Also would like to know what type of green s/he is, just out of curiosity. There is also some of the dark blue color in the wing feathers; is that typical of this color? My sister had a budgie when we were growing up, but she didn't spend much time with him. I'm usually home most of the day, so I'll be spending a lot of time with this one. So far s/he is quite tame. Had to adjust the mirror and s/he didn't freak out at all, or even move more than a couple inches away from my hand. I chose this one because it seemed the most active. While the others were grooming themselves, s/he was attempting a breakout, which technically succeeded, just not in the way they were hoping for.