Mbh 12.139.2a

"'Bhishma said, "Listen, O king, to what happened at the abode of Brahmadatta, viz., the conversation between Pujani and king Brahmadatta. There was a bird named Pujani who lived for a long time with king Brahmadatta in the inner apartments of his palace at Kampilya. Like the bird Jivajivaka, Pujani could mimic the cries of all animals. Though a bird by birth, she had great knowledge and was conversant with every truth. While living there, she brought forth an offspring of great splendour. At the very same time the king also got by his queen a son. Pujani, who was grateful for the shelter of the king's roof, used every day to go to the shores of the ocean and bring a couple of fruits for the nourishment of her own young one and the infant prince. One of those fruits she gave to her own child and the other she gave to the prince. The fruits she brought were sweet as nectar, and capable of increasing strength and energy. Every day she brought them and everyday she disposed of them in the same way. The infant prince derived great strength from the fruit of Pujani's giving that he ate. One day the infant prince, while borne on the arms of his nurse, saw the little offspring of Pujani. Getting down from the nurse's arms, the child ran towards the bird, and moved by childish impulse, began to play with it, relishing the sport highly. At length, raising the bird which was of the same age with himself in his hands, the prince pressed out its young life and then came back to his nurse. The dam, O king, who had been out in her search after the accustomed fruits, returning to the palace, beheld her young one lying on the ground, killed by the prince. Beholding her son deprived of life, Pujani, with tears gushing down her cheeks, and heart burning with grief, wept bitterly and said, 'Alas, nobody should live with a Kshatriya or make friends with him or take delight in any intercourse with him. When they have any object to serve, they behave with courtesy.