Valmiki Ramayana Yuddha Kanda Sarga 60 Shloka 37

विहंगाः birds, सशङ्खभेरीपणवप्रणादम् by the sound of the conchs, आस्फोटितक्षेवळितसिंहनादम् clapping of arms, thundering and lion roar, श्रुत्वा hearing, दिशः direction, द्रवन्तः playing, त्रिदिवम् in the sky, कीरन्तः scattered, सहसा forcibly, निपेतुः fell down.

On hearing the conchs, and of the clapping of arms, and thundering like a lion, the birds playing in the sky got scattered and fell.