Wildlife crossings aren't enough to curb roadkill hot spots, researchers say

A UC Davis study says California’s wildlife crossings need extensive highway fencing to better protect animals from vehicle collisions. The state’s annual Roadkill Hotspots Report estimates that collisions kill about 780 mountain lions and 44,000 mule deer each year. Researchers analyzed records from the California Roadkill Observation System and concluded that crossings alone are insufficient to reduce deaths among at-risk wildlife.