If you look at pictures for the hammerhead bat that is native to Africa, you will see that its face does resemble traditional depictions of the Jersey Devil. The sizes are a bit off given that some people stated that the Jersey Devil was between 6-8 feet tall and the bat has a wing span of 27-38 inches and a total length of 7.7-11.2 inches, weighing 8-15.9 ounces and the females are slightly smaller.
One theory could be that someone in the area was keeping a Hammerhead bat as a pet and it escaped. But once again, the sizes between the Hammerhead Bat and the Jersey Devil are way off. The comparison between the two animals is not to far off since throughout time many residents of New Jersey have kept exotic animals as pets. There also have been quite a few zoos, circuses and what not associated with the area.
Many skeptics and those people looking for a rational explanation as to what people have been seeing for several hundreds years in the New Jersey Pine Barrens have searched desperately for an answer. One of the most common and logical given answers has been the Sandhill Crane.