 Postural displays include tall and low poses , pointing , open bill , and wing waving . The ' tall posture ' is used when in close contact with another bird and is a mild threat . The bird holds itself upright with neck and legs stretched , and it faces the other bird . The ' low posture ' is a submissive gesture ; the bird sits low on the perch with legs obscured by fluffed feathers and often faces away from the other bird . Fledglings threatened by adult birds will adopt a low posture and open their bill widely . ' Pointing ' is a threat display where the bird stretches out horizontally , with feathers sleeked and the bill pointed at the target of the aggression . A bill snap will sometimes accompany pointing . An ' open bill display ' is used by subordinates in encounters between two birds , and by a female on the nest when other birds approach . The ' trident bill display ' involves a fully open bill with the tongue raised and protruding and is a higher @-@ intensity submissive display . ' Wing waving ' is often performed at the same time as an open bill display . The wings are flexed and held slightly away from the body , and flapped out and up around three to six times . Wing waving may be accompanied by a yammer call . ' Eagle ' displays involve holding the wings and tail spread out , in either a vertical or horizontal position . 
 Postural displays include tall and low poses , pointing , open bill , and wing waving . The ' tall posture ' is used when in close contact with another bird and <a href='drop_aux' title='1'><mark>is</mark></a>a mild threat . The bird <a href='uninflect' title='2'><mark>holds</mark></a> itself upright with neck and legs stretched , and it <a href='uninflect' title='3'><mark>faces</mark></a> the other bird . The ' low posture ' is a submissive gesture ; the bird <a href='uninflect' title='4'><mark>sits</mark></a> low on the perch with legs obscured by fluffed feathers and often <a href='uninflect' title='5'><mark>faces</mark></a> away from the other bird . Fledglings threatened by adult birds will adopt a low posture and open their bill widely . ' Pointing ' <a href='drop_aux' title='6'><mark>is</mark></a>a threat display where the bird <a href='uninflect' title='7'><mark>stretches</mark></a> out horizontally , with feathers sleeked and the bill pointed at the target of the aggression . A bill snap will sometimes accompany pointing . An ' open bill display ' is used by subordinates in encounters between two birds , and by a female on the nest when other birds approach . The ' trident bill display ' <a href='uninflect' title='8'><mark>involves</mark></a> a fully open bill with the tongue raised and protruding and <a href='drop_aux' title='9'><mark>is</mark></a>a higher @-@ intensity submissive display . ' Wing waving ' is often performed at the same time as an open bill display . The wings are flexed and held slightly away from the body , and flapped out and up around three to six times . Wing waving may be accompanied by a yammer call . ' Eagle ' displays involve holding the wings and tail spread out , in either a vertical or horizontal position . 
Postural displays include tall and low poses , pointing , open bill , and wing waving . The ' tall posture ' is used when in close contact w another bird and a mild threat . The bird hold itself upright with neck and legs stretched , and it face the other bird . da ' low posture ' is a submissive gesture ; tdabird sit low on the perch witwitgs obscured by fluffed feathers and often face away from the other bird . Fledglings threatened by adult birds will adopt a low posture and open their bill widely . ' Pointing ' a threat display where the bird stretch out horizontally , with feathers sleeked and thdaill pointed at thedaotlocker of the aggression . A bill snap gon sometimes accompany pointing . An ' open bill display ' is used by subordinates in encounters between two birds , and by a female on the nest when other birds approach . The darident bill display ' involve a fully open bill with the tdaue raised and protruding and a higher @-@ intensity submissive display . ' Wing waving ' is often performed at the sadatime as an open bill display . The wings are flexed and held slightly away from the body , and flapped out and up around three to six times . Wing waving may b accompanied by a yammer call . ' Eagle ' displays involve holding the windaand tail spread out , in either a vertical or horizontal position .