All deer, including white-tailed deer, are herbivorous animal species, feeding only on plants.However, unlike other herbivorous species, a deer derives its energy and nutrition only from selected plants. Also, it does not forage on a whole plant but prefers eating only selective parts, discarding the rest of it.Contrary to popular belief, deer such as white-tailed deer don’t feed on grasses. They are adapted to feed on different plant species at different times of the year. There are seasonal variations in a deer’s diet owing to changes in the weather and climate which in turn impacts the vegetation type and its quality. Having knowledge about the habitat range, location and food habits of deer such as white-tailed deer is of utmost importance for both deer conservationists and deer hunters. If you enjoy seeing deer around your home, you should pick the right plants or fruits to provide the maximum protein and carbohydrates. As with all other animals, proper nutrition plays a huge role in determining the size of their body parts. A balanced amount of nutritious foods will enhance their body growth and antler growth while malnutrition will stunt their growth.Looking for more information about the deer diet? Keep on reading to learn exciting facts about food deer feed on.If deer are your favorite animals, you can check out exciting information on are deer color blind and are deer nocturnal here.What do deer love to eat the most?White-tailed deer show a great amount of love towards woody plants, fruits, and grasses that are newly growing and aren’t chewy and hard to digest.Unlike cows, deer cannot feed on all kinds of grasses. As plenty of greenery is found in summer months, it becomes easier for deer to find shrubs and plants within reach. Their favorite food includes forbs or weeds, leaves, small twigs, and grasses. Deer also love to eat fruits like blackberries, mulberries, plums, and grapes from branches of trees that are within their reach. Another delectable source of food for the deer’s diet is mushrooms. They love all kinds of fibrous foods.During winter months, as the availability of forage lessens, whitetail deer shift towards crops like wheat, barley, corn, chestnuts, and acorns that provide vital nutrients like carbohydrates, proteins, and fiber to their body, helping their body and antler growth. Unlike during summer months, they become less picky about their food, eating whatever they find during the winter season.Protein Requirements of White-tailed DeerApart from energy needs, the most important nutrient in the diet of a deer is protein as it aids in a variety of activities like growth and bodily maintenance, reproduction, lactation, and tail and antler growth.According to a recent study at the University of Missouri, the average protein requirements of white-tailed deer varies between 6-22% depending on factors like the age, sex, or stage of life of the deer. While adult deer need 6-10% of protein from foods they eat daily, fawns require much higher levels of protein. Growing fawns require 16-22% of protein while lactating deer need 11-22% protein and deer in the stage of late pregnancy require an average of 11-15%. A small deer requires a well-balanced amount of nutrition with a protein requirement of 12%.How much do deer eat?Deer are known to eat only a small percentage of the amount of food that other herbivorous animals, like cows, eat.Both deer and cows have a four-chambered stomach but there are distinct differences between their food-eating habits. The rumen or the first chamber of the stomach of a cow can hold up to 58.8 gal (222.58 l) of food while the rumen of a white-tailed deer can hold only up to 2.4 gal (9.09 l) of food. The long and slender neck of a deer helps it reach up a variety of plants, yet its food choices are more specific than cows. In comparison to cows, a white-tailed deer eats only four percent of the amount of food cows eat.Unlike other herbivorous species, the deer population is known to eat only two percent of their body mass, mostly to build and maintain their muscles. They do not display a heavy-eating behavior even if there is plenty of nutritious and digestible food readily available in their habitat.According to an estimate produced by Steve Neil, the yearly minimum nutritional requirement of a white-tailed deer is 13,000 lb (5,896 kg) of dry forage weight with protein content. As this is the minimum threshold of food that a buck should consume, any amount less than this leads to malnutrition. This can have a negative impact on the growth of fawns, stunting the growth of their body size, antlers, and affecting their reproductive abilities. A study on deer bucks shows a considerable increase in the length of its antlers by over 45% with an increase in protein from 8-16%.Seasonal Dietary DifferencesAs there is a strong interlinkage between the natural growth of plants, trees and shrubs with the changes in seasons and in areas with different weather and climate, the availability of food influences the dietary patterns of whitetail deer populations in different regions.The weight of white-tailed deer falls drastically in winter months due to a short supply of nutritional food. They start making up for their lost weight by the onset of spring. The spring season usually commences from mid-March, welcoming the growth of new plants. The diverse growth of easily digestible plants brings a variety to the diet of the whitetail. Succulent plants with chewy stems and soft leaves boost the metabolism of deer, making them highly active. Since plenty of food is available at all times of this season, bucks and fawns eat every two to four hours, eating small amounts of food.With the departure of spring and the arrival of summer, the white-tailed deer population starts looking for more than forbs. As succulent plants that grew in the spring start to mature, they harden and become woody. Although deer eat woody twigs and their leaves, they start to shift to other plant sources as the plant matter becomes increasingly tough and indigestible. The summer season is of extreme importance for the growth and development of fawns. Breeding and lactating fawns should derive plenty of proteins at this time of the year to boost the quality and the quantity of milk production. As the white-tailed deer is a mammal, the growth of its offspring largely depends on the nutrition of fawns. Good nutrition is of prime importance to maintain the healthy growth of the mother and her offspring. Hence, early summer is the best time to regain lost weight and increase the nutritional status of deer since a large number of palatable options are available in excess.Next comes the autumn season which marks the key breeding season of white-tailed deer. A nutrient-rich diet obtained in this season will with less stressful survival in the forthcoming winter. Shifting from succulents and fibrous woody plants, whitetails start feeding on a variety of fruits and nuts like acorns, beech nuts, blueberries, apples, grapes, and cherries. They focus more on obtaining an energy-rich diet that will maintain their metabolism. As nuts and fruits are readily available during this period, deer populations feed on as many acorns and other nuts as possible to derive good amounts of carbohydrates. In the autumn, deer eat more energy-rich food higher in carbohydrates and less high-protein alternatives. This drastic change in their diets can be seen as a survival mechanism wherein they consume more carbohydrates so as to store excess energy as fats in their body. The autumn season is also very crucial for their preparation for the upcoming winter. Adult bucks are the first ones to fatten their bodies and prepare for molting to obtain their fur coat. Fattening in fawns is less common and they molt into their coat by late autumn. The extra layer of body hair is developed in just three weeks’ time but its insulating quality largely depends on the amount of protein intake in warmer seasons.With the arrival of the winter season, the white-tailed deer shows distinct physiological changes that aren’t found at other times of the year. As the temperature drops below freezing, leading to snowfall, most of the forage that deer eat becomes snow-covered. This leads to severe food shortages, particularly in winter months. To adapt to this, the deer physiology undergoes significant changes like reduced metabolism by 50%, a reduced heartbeat, and reduced activity. Even if some places have appreciable amounts of plant-based food available, deer will not eat. This purposeful starvation leads to a 15-20% loss of their body weight. During this time, deer populations are seen to feed on low-quality forages like spruce, palms, and Timothy grass. While deer eat nuts like acorns and chestnuts, excess consumption leads to toxic acidosis that can sometimes become fatal. Whitetails exhibit a dormant behavior in early winters, but once they acclimatize to the climate, food shortages or starvation habits seem to bother them less. With the departure of winter, their activity increases in the early spring and they bounce back to their normal lifestyle like other wildlife.What do deer eat regionally?Wildlife biologists categorize regional dietary preferences among whitetails as first and second choices.The first choice differs according to the geographical habitat of deer. For example, in eastern Canada the first choice is white cedar. In northeastern and central USA the first choice is dogwood. In southeastern USA the first choice is greenbrier. In southern USA the first choice is kidneywood. The second choice in the deer’s diet includes maples in eastern Canada and northeastern and southeastern USA, barberry in Central USA, and lime prickly ash in southern USA.Do deer eat meat?No, deer don’t eat meat.Since deer are herbivores by nature, they do not eat any kind of meat. They are predators of plants, not animals. They do often feed on different kinds of wild digestible mushrooms, especially in rainy and winter months.What is the best thing to feed deer?Any succulent plant, acorns, or fruits are the best to feed a deer.You can also feed deer mushrooms, acorns, and forbs that are readily available in your yard. Avoid giving deer extremely fibrous plants or mature grasses as it takes them a long time to digest and might also disrupt the natural functioning of their rumen.Should you feed wild deer?Humans can be both friend and foe to a deer.Although humans become the biggest predators near cities and the countryside, there is no harm in feeding a deer near your garden or along the roadside. However, deer seldom come close to humans. You should avoid feeding a deer if it appears to be in a rush as it might be an indication of the deer being chased by predators. The next time you spot a whitetail roaming near your house, collect some forage and leave it for the deer to feed upon.Here at Kidadl, we have carefully created lots of interesting family-friendly facts for everyone to enjoy! If you liked our suggestions for deer diet, then why not take a look at how fast can a deer run or fallow deer facts?

All deer, including white-tailed deer, are herbivorous animal species, feeding only on plants.