Mating Season (Rut)
Typically occurs in the fall. Male deer (bucks) become aggressive, compete for females (does), rub antlers on trees, and emit musk to attract mates. If mating is successful, the sperm fertilizes the egg.
Gestation
Lasts approximately 190-200 days (6-7 months). The fetus develops in the doe's uterus.
Birth (Fawning)
Typically occurs in spring. Does choose secluded areas in dense vegetation. Most have 1-3 fawns. Fawns are born with spotted coats for camouflage and rely heavily on their mother.
Mother-Fawn Bonding
Does nurse their fawns for several months and fiercely protect them from predators.
Maturity
Fawns begin eating solid food within weeks. Does reach sexual maturity around 1.5 years; bucks around 1.5-2 years.
Interesting fact: Deer have delayed implantation, allowing fawns to be born in spring when food is abundant.