Do the owls have a draft

Hint 1 of 5:

Yes, but there are always four notes in a draft.

Hint 2 of 5:

The missing owl is hunting in the cemetery.

Hint 3 of 5:

Do you see a pair of eyes in the thorns?

Hint 4 of 5:

Walk into the thicket to scare up some dinner for the owl.

Hint 5 of 5:

You can now get NIGHT VISION from the owls.