Attenborough goes on to say: “Having developed the technique they also practise it as a way of reinforcing the bond between them, singing their complex duets even while sitting next to one another on a branch; and sometimes, if one of the pair is absent, the lonely bird will sing the full elaborate melody filling in the missing parts itself. ”
द्वंद्वगीतांचा उपयोग प्रामुख्याने दाट झाडीत जिथे सहचर दिसणे अवघड होते अशा वेळी एकमेकांशी संचारण ठेवण्यासाठी होऊ शकतो.