Underreporting of Wildlife-vehicle Collisions Does Not Hinder Predictive Models for Large Ungulates
While wildlife-vehicle collisions create conflicts and challenges for conservation managers throughout the world, there are areas where underreporting these incidents is a concern for the reliability of data used to inform management strategies. In this report, we test the sensitivity of wildlife-vehicle collision studies using two large ungulate (hoofed mammal) species from different environmental settings that experience a substantial amount of collision incidents. The studies used were based on white-tail deer in central Illinois, and moose in western Maine. We tested sensitivity by using the available data to create a baseline, and then simulate underreporting by excluding reports at random. The model suggests that the relationships between environmental influences and incidents of collision were reliable until more than 70-75% of incidents were underreported.