Ringo does shave and a haircut.
This is Ringo. He's the only bird (I know) that can do this trick. He does the "knock knock" trick with me." He then does "peekyboo." I didn't teach him peekyboo. He learned it watching me play it with my (then) two year old. (she's 10 now). He can say plainly "peekyboo," but seems to prefer the "baby" way of saying it he learned from my daughter. He then laughs.