Valmiki Ramayana Sundara Kanda Sarga 57 Shloka 41
Original Shlokaक्ष्वेलन्त्यन्ये नदन्त्यन्ये गर्जन्त्यन्ये महाबलाः। चक्रुः किलकिलामन्ये प्रतिगर्जन्ति चापरे।।5.57.41।।
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महाबलाः powerful, अन्ये others, क्ष्वेलन्ति howled, अन्ये some others, नदन्ति chattered, अन्ये some others, गर्जन्ति roared like lion, अन्ये some, किलकिलाम् screamed, चक्रुः round and round, आपरे went, प्रतिगर्जन्ति echoed the roaring.
Some powerful vanaras howled, some chattered, some roared and some screamed, going round and round and others echoed the sounds.