Things that go "Caaaa" in the night

Have I ever mentioned that we have semi-wild peafowl & peacocks that come to visit?  They live in a field across the road.  One of our neighbors feeds them.  Here's one in our yard.
These peacocks are really, really loud.  

The first few times I heard them, I was really irritated because I thought they were drunken college students driving down the hill. I was regretting having moved so close to the university.

Want to know what they sound like?