Genesis 15:9-11 KJV

9 And he said unto him, Take me an heifer of three years old, and a she goat of three years old, and a ram of three years old, and a turtledove, and a young pigeon.

10 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.

11 And when the fowls came down upon the carcases, Abram drove them away.