NET
53 and he is to send the live bird away outside the city into the open countryside. So he is to make atonement for the house and it will be clean.
Darby
53 and he shall let the living bird loose out of the city into the open field; and he shall make atonement for the house, and it is clean.
KJV
53 But he shall let go the living bird out of the city into the open fields, and make an atonement for the house: and it shall be clean.