Srimad-Bhagavatam: Canto 6 - Chapter 1 - Verse 5
Sanskrit:
सोमपीथं तु यत्तस्य शिर आसीत् कपिञ्जल: ।कलविङ्क: सुरापीथमन्नादं यत् स तित्तिरि: ॥ ५ ॥
ITRANS:
soma-pīthaṁ tu yat tasyaśira āsīt kapiñjalaḥkalaviṅkaḥ surā-pīthamannādaṁ yat sa tittiriḥ
Translation:
Thereafter, the head meant for drinking soma-rasa was transformed into a kapiñjala [francolin partridge]. Similarly, the head meant for drinking wine was transformed into a kalaviṅka [sparrow], and the head meant for eating food became a tittiri [common partridge].