Read Genesis 15:10 Using Other Translations
And he took unto him all these, and divided them in the midst, and laid each piece one against another: but the birds divided he not.
And he brought him all these, cut them in half, and laid each half over against the other. But he did not cut the birds in half.
So Abram presented all these to him and killed them. Then he cut each animal down the middle and laid the halves side by side; he did not, however, cut the birds in half.