Nestled between the welcome warmth of early spring and the lurking heat of summer, the second week of April is by far my favorite time of the year. Along with the ramp-up of spring migration, this time marks a special occasion: the first local powwow of the year, and the start of the next few months that we call ‘powwow season’.    I’ll rise early and carefully thumb through the stack of skirts hanging in my closet, each one in distinct colors of handpicked fabric with rows of ribbons lining the bottom, before rifling through my overcrowded jewelry box for the perfect pair of earrings.…