SB 11.7.59

prajāḥ pupuṣatuḥ prītau
 dampatī putra-vatsalau
śṛṇvantau kūjitaṁ tāsāṁ
 nirvṛtau kala-bhāṣitaiḥ
Synonyms: 
prajāḥ — their progeny; pupuṣatuḥ — they nourished; prītau — very pleased; dam-patī — the couple; putra — to their children; vatsalau — compassionate; śṛṇvantau — listening; kūjitam — to the chirping; tāsām — of their children; nirvṛtau — extremely happy; kala-bhāṣitaiḥ — by the awkward sounds.
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.