Leviticus 14:53; Leviticus 17:5

53 And he shall let the live bird go out of the city ainto the open country. So he shall bmake atonement for the house, and it shall be clean.

This is to the end that the people of Israel may bring their sacrifices that they sacrifice xin the open field, that they may bring them to the Lord, to the priest at the entrance of the tent of meeting, and sacrifice them yas sacrifices of peace offerings to the Lord.