Why? It's a generally benign condition.
I read the Wiki entry for humans, which goes into mental illness. The one for birds also talks about psychogenic causes like:
Polydipsia sometimes occurs under housing or experimental conditions which purportedly lead to stress or frustration.
For the last couple of weeks, I have used a clicker to try to train Luna to drop a plastic chip into a bowl. It hasnt been much, but after reading this, I'm wondering if it triggered something in him from his past. When we adopted him, the rescue said he was "potty trained" as per the prior owner. I never thought anything of it as I just make sure there's newspapers or towels... I'm probably letting my imagination run wild now
I'll just see what the vet says when the lab results come in. She did say if it doesn't indicate any abnormalities, we may want to x-ray for zinc. We bought a new AA Chiquita for him but I know his old one, which was brought to the rescue, wasn't looking so hot and that's why we decided against it.
I looked it up and now I'm really worried.
Hope the bloodwork comes back soon and Will Give a cause for her issue!