He shall remove its crop with its contents and cast it beside the altar on the east side, in the place for ashes.
Here we have the laws concerning the burnt-offerings, which were of the flock or of the fowls. Those of the middle rank, that could not well afford to offer a bullock, would bring a sheep or a goat; and those that were not able to do that should be accepted of God if they brought a turtle-dove or a pigeon.
Commenting on Leviticus 1:10-17
And he shall pluck away his crop with his feathers,.... Or "with its meat", or "dung", as Onkelos renders it, meaning that which was in its crop; and so the Jerusalem Targum interprets it, "with its dung"; and Jonathan's paraphrase is, "with its collection", or what was gathered together in the crop; it includes the entrails, as Gersom observes: and cast it beside the altar...
And he shall pluck away his crop with his feathers, and cast it beside the altar on the east part, by the place of the ashes: (k) On the side of the court gate in the pans which stood with ashes; .