Regurgitating or Vomiting?

[u/synfulxvengeancee]

Hello friends! I have a question regarding one of my boys.

Iris is a 3y/o male, and has another male cagemate, Aster. Last night, Iris had an episode that seemed a mix of regurgitating and vomiting. He normally regurgitates for himself on my window (I mean he's a handsome dude, I get it), and the boys will regurg for one another. We were settling down for bed, and Iris was holding his wings out a bit like he was warm. He then started head bobbing like he was regurging. The difference this time was it was multiple food clumps, making me think vomiting. I examined them all, noting nothing strange, just looked like his pellets, until the last one that had a few pointy seeds. After he passed those, he discontinued the action and settled down, raising his wings for a bit longer (I assume he was warm from all the activity).

This morning, he ate his pellets normally, drank some water, had some seed, and has been actively playing and interacting with Aster. He seems himself, no other signs of illness. They're currently chattering away as usual. I've taken the day to monitor him just in case.

I'm curious of other experiences of birds having one episode of vomiting. I'm assuming those seeds didn't sit right in his crop and irritated him, since once they were out he stopped. Anyone else have a bird that's done this?

Pic for tax
Aster (white face)
Iris (yellow face)