Ezekiel 44:29-33

They shall eat the grain offering, the sin offering, and the guilt offering; and everything banned from secular use in Israel shall be theirs.

And the first of all the first fruits of every kind and every contribution of every kind, from all your contributions, shall be for the priests; you shall also give to the priest the first of your dough, to make a blessing rest on your house.

The priests shall not eat any bird or animal that has died a natural death or has been torn to pieces by animals.