Valmiki Ramayana 2.45.31
निश्चेष्ट आहार सम्चारा वृक्ष एक स्थान विष्ठिताः ।पक्षिणो अपि प्रयाचन्ते सर्व भूत अनुकम्पिनम्॥
niśceṣṭa āhāra samcārā vṛkṣa eka sthāna viṣṭhitāḥ |pakṣiṇo api prayācante sarva bhūta anukampinam ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book