Long, mid-High pitched call... almost like a locust, but it was a bird

by Terry
(Newcastle, Washington)

We live on the cusp of Issaquah, Newcastle and Renton Highlands in Washington.

I heard a very different bird this morning from my living room. I had to go out to see what the sound was because it was pretty loud. I looked around then saw it, way up in a tree. It was about the size of a Robin, but it wasn't a Robin. It was fairly dark outside, but the bird looked to be medium color... not light and not dark.

It flew away before I could get a good look at it. =(

It had a long, drawn out call, like a locust sound! Not piercing, but definitely high pitched and a little scratchy... not a smooth shrill sound.

I've never seen or heard this bird... do you know what it could have been?

Thanks! Tah