Ooooh Nanday! Gimme gimme gimme! So glad you found out his sickness.

Just a few questions. I'm on the hunt to find my future "perfect bird". At one point, I was considering the Nanday Conure, but was advised the Nanday would be too noisy (as all Aratinga conures are). So how is their noise level? More or less compared to your cockatiel? Well, I guess that's not a very fair question since it looks like the cockatiel is a hen...Also, how many inches long are they? He looks very similar to your tiel, sizewise. I'm most leaning towards the Pattie right now, but I've always loved Nandays.

Edited to add: Your cockatiel is a hen, no doubt about it.