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Examples of lek-mating systems. (a) Blackbuck (Antilope cervicapra) lek at Velavadar National Park (picture credit: Shruti Hegde). (b) Greater sage-grouse (Centrocercus urophasianus) lek by USFWS Pacific Southwest Region (CC BY 2.0 by Jeannie Stafford USFS). (c) White-bearded manakin (Manacus manacus) males displaying on a twig (CC BY-NC 2.0 by jpc.raleigh). (d) Druid-fly (Clusia tigrina) engaged in mating (CC BY-SA 3.0 by Pristurus, 2011).
