image: A 75 cm, level flight of a parrotlet, snapshot shown at the start of each downstroke and when it folded in its wings to bound mid-flight. This material relates to a paper that appeared in the May 17, 2017, issue of Science Advances, published by AAAS. The paper, by D.D. Chin at Stanford University in Stanford, Calif., and colleagues was titled, "How birds direct impulse to minimize the energetic cost of foraging flight." view more
Credit: [Credit: Diana Chin, Lentink Lab]