CrossFlowV : Step by Step: Crow and Crane. 32 minutes. Crow seems to be the arm balance most people want to learn. And, often: crow and crane arm balances are confused, or their names are used interchangeably. This video warms you up, and gets you into BOTH. Grab a pillow (so fear of your head hitting the ground is off the table!), yoga blocks, and a yoga strap, and let's get you supporting yourself with your own two hands!