Body language guide for zebra finch?

I've had my green cheek conure for about 3 years and I still struggle to read their body language. Eye pinning, tail fanning, feather fluffing — what does it all mean? Any good resources specific to this species?

This reminds me of when I first got Peaches. I was so overwhelmed but looking back, those early days were actually really special. The bond building phase is tough but beautiful.

Bookmarking this thread! So much great info. This is why I keep coming back to this forum.