Butterbird Chicken & Bar, a new fast-casual fried chicken restaurant located on Regent Street in Madison, welcomed its first customers on Jan. 18. The restaurant is the second business opened by Joe Papach and Shaina Robbins Papach in the Madison area and their first as business partners with Kaitlin Fischer, Butterbird’s general manager. The couple also owns an upscale supper club, The Harvey House, near the Kohl Center.