Valmiki Ramayana Aranya Kanda Sarga 68 Shloka 20
Original Shlokaबहूनि रक्षसां वासे वर्षाणि वसता सुखम्।।3.68.20।। अनेन दण्डकारण्ये विशीर्णमिह पक्षिणा।
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रक्षसाम् the demon's, वासे dwellingplace, इह here, दण्डकारण्ये Dandaka forest, सुखम् happily, बहूनि many, वर्षाणि years, वसता living, अनेन by this, पक्षिणा by the bird, विशीर्णम् lost life.
Dwelling for many years happily in Dandaka forest, the abode of demons, the bird lost his life (on our account).