Leviticus 1:14-17
Moses tells Israel's people what to do with gifts that are birds
14 If a person wants to give a bird to the Lord, it must be a dove or a pigeon. 15 The priest will bring the bird to the altar. He will tear off the head and he will burn it on the altar. The priest will pour the blood onto the side of the altar. 16 Then the priest will remove the part of the bird where the food is stored. He will throw it on the east side of the altar, with the ashes. 17 He will hold the parts that the bird uses to fly. And then he will tear open the body. But he must not tear it completely. He will burn all of it on the fire that is on the altar. The smell of it while it is burning will give the Lord pleasure.