I often hear tata-tata-tata-tak coming from the woods.
We have lots of Hairy Woodpeckers around the property. I used to get them confused with downy woodpeckers because they look an awful lot alike: same black/white barred pattern with the red on the back of the head. The way to tell the two apart is their size and their beaks since everything is bigger on the Hairy! This is recent evidence of their toils.