Read Leviticus 5:8 Using Other Translations
And he shall bring them unto the priest, who shall offer that which is for the sin offering first, and wring off his head from his neck, but shall not divide it asunder:
He shall bring them to the priest, who shall offer first the one for the sin offering. He shall wring its head from its neck but shall not sever it completely,
You must bring them to the priest, who will present the first bird as the sin offering. He will wring its neck but without severing its head from the body.