Familiar

While in Chicago, Cameron pointed out a pair of pigeons.  "Those two pigeons were just pecking at each other with their beaks!" he said.  And as he said this, one of the pigeons hopped onto the other's back.  A short pigeon fight ensued, with much pecking and flapping before the victor snagged the piece of bread that apparently inspired the melee.  "Ahhh," said Cameron, "they must be brothers like me and Matthew."