The U.S. white-tailed deer population has ballooned to an estimated 30 million in number. Thirty million! These overabundant “soft-eyed nibblers,” as my old wildlife management professor called them, are hindering the regeneration of desirable hardwood species in the eastern U.S., spreading disease-carrying ticks, and causing about 1.5 million vehicle collisions and 10,000 crash-related injuries every year.