Yes--they do. They eat mostly worms. Their long beaks can sense them (some say vibrations). This requires soft fertile soils.
My understanding is that they tend to follow along drainage (rivers, streams and brooks) as they work their way south.
I've found then in low wet areas consistently and in uplands adjacent to the same, but always close to waterways.
There are lots of great books on the subject. Wet and fertile belts of land are the key. During dry years, look for low areas with ferns and such.