Good coverage on the decline and ruse of deer and other North American populations in The Natural Regulation of Animal Numbers by David Lack (1956). Deers almos

Good coverage on the decline and ruse of deer and other North American populations in The Natural Regulation of Animal Numbers by David Lack (1956). Deers almost wiped out by we humans. But wild oscillations of mule deer when protected. Hunting was prohibited in 1906 when there were about 4000 left on the Kaibab plateau. Numbers reached 100,000 by 1924 but then plunged to 10,000 by 1939 due to starvation from overgrazing. Ditto for white-tailed deer in Pennsylvania—down to 1000 by 1905, then protected and population was up to 1 million by 1927. Then down to 500,000 by 1938.