I just watched my budgie, Sprite, adjust her crop about 15 times in a row. She was sitting on a perch, grooming, then she started. She continued to groom and scratch herself while she was adjusting her crop too. Is she sick? She doesn't act sick at all. She's eating her vegetables now, and trying to knock the bowl out of the ring. She ate a lot maybe 15-20 minutes ago, could her crop just have been really full?