Apart from a case of scaly face (just treated for), my in ability to fly (can glide down) and my unsusal tweet, what am I (besides a budgie...)?

okay, from the photo I would say Male Opaline Greygreen Cinnamonwing.

Male, although may well be a female out of breeding condition, opaline, grey green and I am going to say greywing.

Female,,,,,,,,,,,out of breeding condition.....................opaline grey green greywing.

Male Opaline Grey Green Dilute

I think Kaz is right, without the camera flash it appears as a very light grey wing marking. When I got it I was under the impression it was female, the blue has appeared more recently. So unless it's a very sick male... I think she is just a long way out of breeding condition.

Female grey green opaline greywing