Winter!: Prepare for holiday gaming!
As Dodrio metamorphasizes from Doduo, a third hand is formed, to contain the brain that was originally held close to the cardiovascular system, as Doduo.
The hands look like even more fierce-some "heads", but hold little to none of the actual functionality as "heads" normally would be expect, save the middle hand. The third underdeveloped stomach system, becomes a way for the middle hand to take in nutrients and sustenance for its purposes. All three digestive systems being simple in amongst avian digestive systems.
It seems that this species found early on, that instead of gaining wings for flight, having three "faces" for grabbing, biting, opening and manipulating tools, all of which independently able to take in food, as well as add information to its visual cortex... allowing it to be a much more effective hunting machine--as well as evading being hunted.
Sometimes Dodrio will mistake its hands for other birds if it is particularly tired--or excited.
You do not "high five" Dodrios either.