Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 59
Sanskrit:
तासां पतत्रै: सुस्पर्शै: कूजितैर्मुग्धचेष्टितै: ।प्रत्युद्गमैरदीनानां पितरौ मुदमापतु: ॥ ६० ॥
ITRANS:
prajāḥ pupuṣatuḥ prītaudampatī putra-vatsalauśṛṇvantau kūjitaṁ tāsāṁnirvṛtau kala-bhāṣitaiḥ
Translation:
The two pigeons became most affectionate to their children and took great pleasure in listening to their awkward chirping, which sounded very sweet to the parents. Thus with love they began to raise the little birds who were born of them.