Valmiki Ramayana Ayodhya Kanda Sarga 95 Shloka 11
Original Shlokaतांश्चातिवल्गुवचसो रथाङ्गाह्वयना द्विजाः। अधिरोहन्ति कल्याणि निष्कूजन्त श्शुभा गिरः।।2.95.11।।
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कल्याणि O my auspicious Sita, वल्गुवचसः of sweetvoiced, रथाङ्गाह्वयनाः birds named Chakravaka, द्विजाः birds, शुभाः most pleasant, गिरः tones, निष्कूजन्तः uttering, तान् on those (heaps of flowers), अधिरोहन्ति alighting.
O my auspicious Sita, sweetvoiced Chakravaka birds singing in most pleasant tones are alighting on those heaps of flowers.