SB 6.9.5
soma-pitham tu yat tasya
sira asit kapiñjalah
kalavinkah sura-pitham
annadam yat sa tittirih
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
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 kalavinka [sparrow], and the head meant for eating food became a tittiri [common partridge].