When perched , it utters a rising kwik - kweek kwik - kweek contact call .
The green rosella has a repeated two - syllable contact call , which has been written as kussik kussik or cossack cossack and is heard in flight .
When perched , rosella utters a rising kwik - kweek kwik - kweek contact call .
The green rosella has a repeated two - syllable contact call , which has been written as kussik kussik or cossack cossack and is heard in flight .