This is a very old southern "thing"
Do you know how to "fiddle for Worms"?
After a rain, find a tree with a trunk diameter of about 3", cut the tree down leaving a trunk thats about 2 foot tall. Then use a regular old fashioned hand saw and very gently start sawing straight down the tree trunk. This causes the trunk to vibrate and will make earthworms come to the surface...I grew up in Alabama and my grandmother would take us out all the time to go "fiddle for worms" then we were off to the catfish pond.... It was really interesting, after a few minutes of sawing, you would see thousands of worms within a 5' diameter of tree trunk.