That may be. This is the 3rd single pig to show up in this 10mi area in 10yrs. That I've heard of.It could be the only one. About 3 - 4 years ago, a kid spotted a single pig on a creek about 3 miles west of me. Fortunately he shot it and no one has seen any more in the area since.
Maybe the national association for the expansion of swine sounders sends out recon scouts before invading an area. If the scout doesn’t report back, they migrate a different direction.