Valmiki Ramayana Kishkindha Kanda Sarga 43 Shloka 18
Original Shlokaततो देवसखो नाम पर्वतः पतगालयः। नानापक्षिगणाकीर्णो विविधद्रुमभूषितः।।4.43.18।।
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ततः from there, पतगालयः nests of birds, नानापक्षिगणाकीर्णः full of different kinds of birds, विविधद्रुमभूषितः adorned with different kinds of trees, देवसखो नाम Devasakha by name, पर्वतः mountain.
'Then proceed to mount Devasakha inhabited by a variety of birds adorning the trees.