Flying at No Mechanical Energy Cost: Disclosing the Secret of Wandering Albatrosses User sotaswirl, in the Biomimicry: Design Inspired by Nature subreddit, 30 Sep 2012
Flying at no mechanical energy cost: Potential for utilizing the wandering albatross' flight technique to create robotic aircraft with engine-less propulsion. User DarwinDanger, in the Reddit Science subreddit, 30 Sep 2012