Why have there been multiple instances of guys dressed up as chickens descending on RBS's Stamford trading floor, the most recent one being this past Friday? Well, last time we checked, RBS doesn't have to explain itself to you but if you must know, apparently it's kind of their special birthday thing. Got a birthday? You get a visit from a guy in a chicken suit. It's unclear if last week's special guest "lead half the trading floor in the chicken dance while a good chunk of surrounding desks clapped along in unison," as had been done in the past, but it stands to reason.