(From left) Eileen Bryce, Mary Ann Doran of M.A. Doran Galleries and Linda Allen flank a 6-foot-tall fiberglass penguin at the Tulsa Zoo on Thursday. Dozens of the model birds, decorated by artists ...

For the first time in its more than 150-year history, this Pennsylvania zoo is adding a feature that will give guests a bird’s-eye view of not only its holiday show but also America’s 250th birthday ...