I also noticed that they move across land when its wet or rainy. My house is way uphill and about 150 yards away through the woods from a stormwater easement type pond. No roads trails or anything, just woods.
We have spotted not only crayfish but turtles including snappers and pond turtles in our yard. I don't know what they are looking for, except the pond turtles lay eggs in my yard and bury them.
