There is abnormal regurgitation - in which the bird brings up food with a head bob, and doesn't "deposit" it or swallow it back down, and it kinda just spills out of the beak. Or they'll sling it like they would if they were vomiting.
You can spot the difference easily if you're keeping a close eye, as abnormal regurgitation is a symptom of illness and is often accompanied by other symptoms, like lethargy/sleepiness.