Bird Call Video - Sounds like a car alarm (2 Viewers)

[bugstalker]

We have a bird near our home that sounds like a car alarm. It doesn't always call out, but lately it's been particularly active. I managed to get a video of the calls this morning. It is very, very loud, and the video does not do the volume justice. You'll see in the video the direction I believe it's coming from. I am across a cul-de-sac from the location. The call changes a bit near the end of the video.

Our home, and those around us, back up to a green belt. I live in Tulsa, Oklahoma. Any ideas what this might be? I am an insect photographer, but I know very little about birds. This one has me intrigued! Is it even a bird?

I apologize for filming the ground. My neighbor was outside and I didn't want to look like I was filming him! Here's the link: https://www.dropbox.com/s/lowbp36x99qq3qp/VID_20120914_095148.mp4

EDIT: Sorry for not including the country in my title!!!

 

[MySongbirds]

If that is a bird, it sounds like a Northern Mockingbird (Mimus polyglottos). Mockingbirds will mimic anything (other birds, frogs, insects and probably car alarms).

Happy Birding!

 

[bugstalker]

I thought that might be it, but this is the only sound we ever hear it make. That first set, and then the second variation. If it makes other sounds, they're aren't the same volume and I can't discern them from other bird sounds. I figured a Northern Mockingbird might make additional sounds, but we've listened closely and can't seem to hear the same bird make any other sounds. I thought it might have been an owl, but I looked up several calls and none match. It really may not even be a bird. Thanks for the tip, though!

 

[dacol]

Telling us roughly where you are in the USA might also help. It does sound like a bird but perhaps is a captive exotic one, the sound resembles a bit a Guinea Fowl, also some similarities with a Peafowl call. Thus I would guess some species related to pheasants. Does the sound always come from the same direction and about the same distance (guessed by the intensity)?