Raz, Pileated Woodpeckers LOVE suet. Not the grain-adulterated bird blocks, but the real stuff. Meijers sells it packaged in their meat department, it's really inexpensive. Take some hardware cloth and make a cage with a top that will open for filling, and attach it to a large tree trunk about head level that you can see from your window. (If you just leave it in an open cage the squirrels will steal it). My Pileateds are so tame I can walk to within 10 feet of them when they are on the feeders, and they just stare back at me.