In lek systems, males provide:
Only displays reflects key principle in quiz on mating behavior+pyqs, where evolutionary mechanisms shape genetic variation and adaptation. In this context, Only displays aligns with experimental and theoretical evidence from population genetics, behavioral ecology and molecular phylogeny. Textbooks like Campbell Biology, Futuyma Evolution and Hartl Principles illustrate supporting data. Understanding why Only displays fits helps integrate natural selection, environment.
Ref: Alcock, Animal Behavior, 11th ed., Chapter 11: Mating Systems.