Hello, yes, it was a dirt run. But we read that if you dig a trench around the run and put about 6 inches of chicken wire down around the base, it would deter the digging. So thats what we did and the fox actually dug up all the chicken wire and went about 2 feet deep. Now we have fort knox. Live wire running around the base about 4 inches off the ground, and we stapled chicken wire under the complete run and threw dirt over it. We also got foxwatch (don't know if it actually works) and a BB rifle (just in case). I don't plan on losing anymore birds. I kept saying I "should" of taken them in that night, but I thought with all the chicken wire around the base and the radio talking loud, oh, and I did hit the fox with a can of tomato sauce, we thought it was safe. He got his revenge. The kids were amazed about the size of the hole the ducklings dug and got away.
Kari
Love the part about the tomato sauce,, can't stop giggling!! Sorry