Wild Facts About The White-Tailed Deer

Meet The White-Tailed Deer

The White-Tailed Deer is at once graceful yet powerful, shy yet abundant. The sight of a wild deer bounding across the countryside in the golden light of dawn thrills nature lovers of all ages.

Read on to discover wild facts about these fascinating creatures.

Fast Facts About The White-Tailed Deer

Common Name(s)	White-Tailed Deer
Scientific Name	Odocoileus virginianus
Animal Type	Kingdom: Animalia Phylum: Chordata Class: Mammalia (the mammals) Order: Artiodactyla Family: Cervidae (true deer)
Size	Body mass varies by sex and broadly across their range. Males weigh 25 to 45 percent more females. Northern deer tend to weigh more than southern deer. Average mass across their extensive range is 140 pounds (63.5 kg) for bucks (males) and 100 pounds (45.4 kg) for does (females) (Ballard 2016). Stand 2.5 – 3.5 feet (0.8 – 1.1 m) at the shoulder, with total head height about level with an average adult woman. Nose to tail length: 6 – 7 feet (1.8 – 2.1 m) (Ballard 2016).
Appearance	General: Red-brown during summer, gray-brown in winter. White throat patch, nose band, eye ring, inside of ears, and belly. Black spots on side of chin. Long, thin legs with slim, sharp, black, two-toed hooves. Dark brown eyes, with horizontal pupils. Large, cupped ears. 12 – 16 inch (30.5 – 40.6 cm) triangular brown tail; edged in white above and sometimes has a dark stripe down the center or dark tip. Underside of tail is bright white. Males: Yearling bucks have short, slim, unbranched antlers called “spikehorns” Adult bucks have antlers that spread from a thick beam on either side of their head and end in several unbranched points. During mating season, bucks develop thick, muscular necks. Male White Tailed Deer Odocoileus virginianus Mammal Buck Photograph taken and design created by the author Copyright © 2025 Now I Wonder All rights reserved Females: Smaller overall than males. Lack antlers. Juveniles: Red-brown coats. Newborn and fawns up to a few months old are speckled with bright white dots. Weigh around 6-7 pounds (2.7 – 3.2 kg) at birth. Fawns lose their spots after about 4 months, when they shed to grow their first winter coats (Hiller 1996).
Habitat	Prefers combination areas of mixed young forest, old field, and crop lands. Does well in agricultural areas, along the edges where meadows and farm fields meet woods.
Diet	Herbivore (plant-eater); eats: Browse (leaves and the green, non-woody twigs of woody plants, like shrubs and trees), Forbs (net-veined, often broad-leaved, plants with non-woody stems), Grasses (parallel-veined, non-woody plants with inconspicuous flowers), Lichens (combinations of a fungus and an alga). Food choices vary by season: Graze on herbaceous vegetation during the summer and browse on woody food, like tree bark, during the winter when green, leafy food isn’t available.
Active Time	Primarily nocturnal (night-active) and crepuscular (dawn and/or dusk active) but may be active throughout the day.
Range	Throughout the eastern United States.
Season(s)	Spring Does that survive the winter give birth to 1 to 3 fawns about 7 months after mating. Individuals shed their heavy, gray winter coats for lightweight red-brown coats. Healthy bucks begin to develop antlers. Summer Does and their fawns separate from bucks into maternal groups. Unrelated bucks roam in bachelor groups and take no interest in their fawns. All individuals focus on avoiding predators and eating as much as they possibly can. White-Tailed Deer must build fat reserves while food is plentiful to survive the upcoming winter. Autumn Mating/Breeding Season: Breeding season varies by latitude and is largely determined by day length (photoperiod). In the northern portions of the eastern United States, mating season occurs around the first two weeks of November. In the southern portions, mating season occurs around January or February. Starts with “the rut”, when bucks become bolder and prowl for females. Bucks rub antlers on trees and scrape bare patches into ground beneath tree branches to mark territory and signal their presence to breeding females and rival males. Males fight for dominance in the social hierarchy by clashing their antlers together. Winter Winter signals the “hunger moon” for White-Tailed Deer. Food is least abundant and least nutritious. In the north where significant snow falls, deer congregate in “yards”. Yards are woodland areas somewhat protected from heavy snowfall. White-Tailed Deer struggle in deep snow, so they limit long-distance foraging in favor of staying in their yards. Staying still uses less energy than fighting through deep snow. But it’s a risky strategy and many deer starve or become easy prey for predators during the winter. Even if this means they eat less (because they don’t forage far and wide for food), remaining sedentary uses much less energy than fighting their way through deep snow. In the south, White-Tailed Deer can still suffer during the winter months, despite the lack of significant snowfall. Heavy rain can flood low-lying areas and force deer into smaller areas where they quickly deplete available food. Even though deer are strong swimmers, they still weaken from lack of food.
Predators And Threats	Human Threats Legitimate, honorable hunters hunt White-Tailed Deer throughout their range. Poachers kill White-Tails without regard for laws, hunting seasons, or the good of the species. Many deer are struck and either grievously injured or killed outright by cars. Well-meaning humans mistakenly assume a fawn lying quiet and hidden in brush has been abandoned and intervene. Unfortunately, this results in the mother abandoning the fawn for real. Humans who allow their pet dogs to run free and attack other animals cause many White-Tailed Deer deaths. Natural Predators Wolves – Timber Wolves, Mexican Wolves, and Red Wolves (species vary by range) Mountain Lions (Puma concolor) (also called cougars and catamounts) Coyotes (Canis latrans) – mostly of fawns, and the already weakened, injured, or dying Black Bears (Ursus americanus) – Rare. Black Bears are omnivores; they will consume dying or dead deer if they encounter them and occasionally kill fawns. Bobcats (Lynx rufus) – Usually a minor threat and mostly to fawns. American Alligators (Alligator mississippiensis) – easily able to kill adult deer. Feral Hogs (also called razorbacks and feral pigs) – Prey directly on fawns and also eat large amounts of the same food White-Tailed Deer rely on. Invasive Burmese Pythons (Python bivittatus) (Mangione et al. 2025, https://doi.org/10.1002/ece3.71875) Other Natural Threats Starvation during winter. Parasitic infestation: Many parasites infect White-Tailed Deer. While much of the time, infected deer survive, the constant drain of their energy and vitality by their parasites weaken them over time and make the deer more susceptible to other threats. White-Tailed Deer parasites include: Meningeal worms Tapeworms Lung worms Liver flukes Nasal bots (larvae of Cephenemyia flies that live in the deers’ noses) (Ballard 2016). Deer ticks Infections, including: Hemorrhagic diseases Chronic Wasting Disease Bovine Tuberculosis Toxoplasma gondii: This protozoa can transmit to humans who eat the cysts in under-cooked venison (White-Tailed Deer meat) (Dubey et al. 2020, https://doi.org/10.1017/S0031182020000451)

Weapons For A Season

Male White-Tailed Deer. Odocoileus virginianus. Mammal. Buck. Photograph taken and design created by the author. Copyright © 2025 Now I Wonder. All rights reserved. — Male White Tailed Deer Odocoileus virginianus Mammal Buck Photograph taken and design created by the author Copyright © 2025 Now I Wonder All rights reserved

Bucks In Velvet

Male White-Tailed Deer grow a new set of bony antlers every year in early spring.

Antlers grow from small pads of living tissue called pedicels on their skulls. Pedicels develop in male White-Tailed Deer before they are even born and appear as cowlicks above each eye. Good nutrition determines the size and health of bucks’ pedicels and the eventual growth rate and size of their antlers. Well nourished bucks grow bigger pedicels and thus bigger, more impressive antlers.

Increasing day length in spring triggers antler growth. When antlers first emerge from the pedicels, they are covered in a soft network of blood vessels and nerves that looks like velvet or suede. Bucks in this season are referred to as being “in velvet”. Velvet feeds blood to the developing antlers (along with the antler’s cores).

The stakes are high when bucks are in velvet because velvet is extremely delicate. It bruises and tears easily and can suffer frostbite if sudden cold snaps hit. Damage to velvet causes deformed antlers. White-Tailed Deer bucks seem to “remember” damage to their antlers while in velvet. Even though they grow new antlers every year, an injury serious enough to deform one year’s antlers causes all future antlers to deform in the same way.

Bucks Are Up For Fights

By October, shortening day length triggers the end of antler growth. The antlers harden, blood supply to the velvet cuts off, and the velvet sloughs off in strips. People who see bucks during this period often think the deer are injured but this isn’t the case. Each antler is now a hard, broad, branching bone that curves up from a central beam into many very sharp points. Bucks fight for dominance and the right to mate by clashing their antlers together. The size, breadth, and durability of their antlers determine which bucks can mate; bigger bucks with bigger racks (antlers) usually win all the females.

Weapons Down

White-Tailed bucks drop their antlers after the fights are over and mating is finished for the year.

Each antler separates from its pedicel and the separation point heals over quickly. Despite the high number of White-Tailed Deer throughout their range, discarded antlers are surprisingly hard to find in the wild. Many animals—especially rodents—chew up antlers for the calcium and other minerals they contain.

Waiting Games and Come Hither

When it comes to mating and continuing their species, timing is everything for White-Tailed Deer. Does enter estrus (the period during which she can become pregnant) for only about a day. So bucks must be ready.

White-Tailed Deer bucks establish dominance hierarchies early in the mating season. because timing is everything in White-Tailed Deer mating. Dominant bucks may pursue individual does relentlessly—sometimes for days—until they become receptive to their attentions. During this time, the bucks fight rival males that attempt to take over their pursuit. Sometimes, more powerful challengers defeat the original pursuers. But from the does’ perspective, very little changes.

Until she enters estrus, White-Tailed Deer does work hard to evade their suitors. They’ll run away, sneak away, bed down in heavy brush, and attempt to hide amongst other deer. But once they enter estrus, they change their behavior abruptly. Does become bold. They prance into the open with their tails stuck out to the side and bounce around to attract attention. Eager bucks recognize the signals and they mate.

White-Tailed Deer Photo Gallery

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Christine

Christine is the creator and author of NowIWonder.com, a website dedicated to the animals and plants that share our world, and the science that helps us understand them. Inspired by lifelong exploration and learning, Christine loves to share her knowledge with others who want to connect with wild faces and wild spaces.

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Wild Facts About The White-Tailed Deer

Meet The White-Tailed Deer

Fast Facts About The White-Tailed Deer

Common Name(s)

Scientific Name

Animal Type

Size

Appearance

Habitat

Diet

Active Time

Range

Season(s)

Spring

Summer

Autumn

Winter

Predators And Threats

Human Threats

Natural Predators

Other Natural Threats