There are some nice pictures of a pileated woodpecker on this post:
I poked my head outside and had a look and yes, there was an older juvenile Pileated Woodpecker in the old dead Oak next to the suet feeder. The bird kept up its calling and I looked at the suet feeder. Sure enough, there was a Grey Squirrel up on the feeder furtively snatching suet as fast as it could.
