This video shows a group of penguins being taken on a "parade march" through a zoo.<br /><br />Adorable footage shows the curious penguins waddling out of their enclosure one by one at Pittsburgh Zoo and Aquarium in Pennsylvania, USA - much to the delight of spectators. <br /><br />The event is held from December to February and lets visitors get "up-close and personal" with the aquatic birds.
