Leviticus 1:14-17

“If a bird is presented to GOD for the Whole-Burnt-Offering it can be either a dove or a pigeon. The priest will bring it to the Altar, wring off its head, and burn it on the Altar. But he will first drain the blood on the side of the Altar, remove the gizzard and its contents, and throw them on the east side of the Altar where the ashes are piled. Then rip it open by its wings but leave it in one piece and burn it on the Altar on the wood prepared for the fire: a Whole-Burnt-Offering, a Fire-Gift, a pleasing fragrance to GOD.”