Flocks of small, full-service chicken wing chains are taking flight in hopes of one day catching up to segment leader Buffalo Wild Wings, which is on course to reach 500 units by the end of the year while expecting to continue growing at a 15-percent annual rate.Unlike the college-kid-oriented, bar-style restaurants of yore, most of today’s wing specialists offer broader menus, serve less alcohol, and are positioned to appeal to young families and couples, as well as young adult males....
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