Enoch - And after that I saw in my vision all the birds of heaven coming, the eagles, the vultures, the kites, the ravens; but the eagles led all the birds; and they began to devour those sheep, and to pick out their eyes and to devour their flesh.

Notes

The book of Enoch is not part of the canonical scriptures (The Bible) we know today and we don't know how accurate it is.

Some belive while Enoch is not inspired by God that it still serves as a historical book on the time before the flood. It's also quoted in the New Testament in Jude 1:14-15.

Because of this I wanted to include this book for historical reasons.

I would recommend reading the Bible first and foremost as it should be your foundation. Then if you are intrested you can take a look at the book of Enoch.