Theres a bird calling.

ooHOOoo.hoo!

It's relatively low pitched, I can reproduce it. (😜 poorly) I never see it, but I hear it all the time.

ooHOOoo.hoo!

It sounds crow/raven sized, but dunno. There's more than one. Sometimes 2 or 3 cut loose at once.

Dunno what they're called. I want to say Uhu, but that's a different bird?