SOOOO cute!!
In that first photo, Soda looks like he's smiling and saying heeheehee, as he sneaks a bit of popcorn!

It has been a long time since I have had birds, so I may be wrong about this, but if Soda is bothered by that little feather sticking out, I think he will pull it out himself. I would just observe him for a few days and see if he seems bothered by it or not.
But of course, that's just my guess. I'm sure others here will be able to give you more concrete advice.

In any case, just wanted to comment on how adorable these two are!