Heya there,
I would place money on it being a Dilute Green. Its impossible to tell whether it is male or female without DNA sexing oor until it is around 2yo.
From the look of it I would have to agree that it is under 1 year old, anything from 4-5 months through to nearly a year of age.. so its safe to say they are being honest.
The colouring is a perfect example of Dilute where the flights are the similar if not almost exact same colour as the rest of the wing, and that they are yellowish compared to the lime body.
In regards to the tail.. I honestly have never seen an IRN with that natural structure before. Without knowing what birds it may have been bred to (hybrid) or if this phenomenon is present in the parents I cant really comment on that.
If you can get a rear shot of the tail it would be very good to see if it was bent physically or by the bird itself. I have seen birds tails preened to the point where they bend smoothly to one side just like yours, however not in both directions.
Cheers for sharing
