I think my barred rocks are the smartest chickens, (as chickens go), but I would have to say the friendliest ones are my gold comets and red comets. They sing, too. My cochins and silkies are not that friendly, but they haven't been handled much, only 12 weeks old. My granddaughter, however, can pick up any pullet or rooster and carry it around, no problems. They love her!!