title: Birds 'flap run' to save energy.
authors.forename: Kathryn
authors.initials: K
authors.lastname: Knight
mesh_terms: D000818:Animals; D005075:Biological Evolution; D010856:Columbidae / Q000502:physiology*; D009119:Muscle Contraction / Q000502:physiology*; D010369:Pectoralis Muscles / Q000502:physiology*