There is this one bird call that I want to pin point?

I know it sounds like the Loon bird and they usually go together. It sounds like this howl screech thing. like Eaahhhhhhhhhhhhhhhhhhhh ah . But I haven't found a loon call that has that. Help me out? I love this night time forest sound and I want to pin point the creature who makes it. a href="http://www.youtube.com/watch?v=kiXjCifQn0w" rel="nofollow"http://www.youtube.com/watch?v=kiXjCifQn…/a this is it! Is this still a Loon calling?