Śrīmad-Bhāgavatam · Text 11.20.15
Who is speaking and story frame
छिद्यमानं यमैरेतै: कृतनीडं वनस्पतिम् ।
खग: स्वकेतमुत्सृज्य क्षेमं याति ह्यलम्पट: ॥ १५ ॥
chidyamānaṁ yamair etaiḥ
kṛta-nīḍaṁ vanaspatim
khagaḥ sva-ketam utsṛjya
kṣemaṁ yāti hy alampaṭaḥ
Without attachment, a bird gives up the tree in which his nest was constructed when that tree is cut down by cruel men who are like death personified, and thus the bird achieves happiness in another place.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.