Can anyone help me find the poem about the crows?

I heard this poem about a million years ago when I was in high school.  I have searched the internet but cannot find it.  I believe it was called the Fabled Crows??

I am pulling this from memory, so I know it is garbled – but at least this is the gist of what I can recall:

The fabled crows watched five hunters go behind

And three depart from one stark hunter’s blind

And flew down from all the neighboring trees

So were blasted

Truth is what one sees

Consequence is what one fails to see