Assertion: crane | /r/CapableOf | use a unison call
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text: ” Cranes also have various higher intensity threats including an “arch display” where the bird extends its wings to appear bigger Cranes will use a “unison call” where both male and female call together to defend their territory and reinforce their bond Cranes will use “distraction displays” to ward off intruders around their young Cranes will even use the commonly known “broken wing display” where they feign injury to mislead a predator Cranes use “guard calls” where a single bird bugles loudly to scare away predators and warn other cranes of danger Cranes are famous for their elaborate dancing, much of which has been imitated by cultures for hundreds of years