abstract A recent study has found that differences in a male trait, considered a textbook example of sexual selection, are in fact due to naturally selected variation in the aerodynamic optimum for each individual.
has subject area Animals Biological Phenomena - Biological Evolution Feathers Genetic Phenomena - Biological Evolution Male Mating Preference, Animal Musculoskeletal Physiological Phenomena - Flight, Animal Musculoskeletal Physiological Phenomena - Flight, Animal Phenotype Selection, Genetic Sex Characteristics Swallows