title: [Evolutionary development of courtship in dabbling ducks].
mesh_terms: D000367:Age Factors; D000819:Animal Communication; D000818:Animals; D005075:Biological Evolution; D003380:Courtship; D004372:Ducks / Q000502:physiology*; D006824:Hybridization, Genetic; D008124:Locomotion; D009068:Movement; D011587:Psychology, Comparative; D013045:Species Specificity; D013997:Time Factors
vernacular_title: Uber Evolutionsvorgänge in der Schwimmentenbalz.