Leviticus 1:13-15

New Revised Standard Version, Anglicised Catholic Edition

¹³ but the entrails and the legs shall be washed with water. Then the priest shall offer the whole and turn it into smoke on the altar; it is a burnt-offering, an offering by fire of pleasing odour to the Lord.

¹⁴ If your offering to the Lord is a burnt-offering of birds, you shall choose your offering from turtle-doves or pigeons. ¹⁵ The priest shall bring it to the altar and wring off its head, and turn it into smoke on the altar; and its blood shall be drained out against the side of the altar.