If anyone can help sex these two 9 week old babies I would really appreciate it; they were my sons birthday present, are handled twice a day and we are getting so fond of them! one has always been a little bigger than the other, (she) is the bossiest and has darker feathers, with green feathers developing down the back of her neck. The slightly smaller of the two has more rusty colouring on his (?) wing feathers, has only just started getting a hint of green, not as much as the other one and he now makes a totally different lower call/sound when I separate them for the couple of minutes it takes me to put them in their other pen each night. I feel there is less barring on their feathers than there was a couple of weeks ago, and one has obviously more rusty colouring on the wing feathers than the other! As you may have guessed we are leaning towards them being a pair, and for now its easier to refer to them as him and her to tell identify them; but very excited to hear others much more experienced opinions. Sunbathing! rusty wing feathers? More green colouring developing on one than the other? The smaller, one on the left here is the one that is now making a deeper call, different to the noises they've made since chicks?