Leviticus 1:15

1:15 The priest must present it at the altar, pinch off its head and offer the head up in smoke on the altar, and its blood must be drained out against the side of the altar.

Leviticus 1:17

1:17 and tear it open by its wings without dividing it into two parts. Finally, the priest must offer it up in smoke on the altar on the wood which is in the fire – it is a burnt offering, a gift of a soothing aroma to the Lord.