Old Grande puts on an impressive display to attract a mateTo play this video you need to enable JavaScript in your browser.This video can not be playedOld Grande puts on an impressive display to attract a mateCloseWatch the full episode on BBC iPlayerSubsectionScience & EnvironmentPublished27 JuneShareclose panelShare pageCopy linkAbout sharingRelated topicsDinosaursFollow Dinosaursclose panelYou are now following DinosaursUpdates from your News topics will appear in My News and in a collection on the News homepage.Read description