Roe deer or deer: which damages crops and gardens more?

As a veterinarian and clinic co-director, I often encounter landowners and loggers concerned about deer damage, and I understand your concerns. 🦌🌲 This article compares roe deer and deer, describes the types of damage, proposes protection solutions and specifies the economic and ecological issues related to overabundance. I rely on field observations and the synthesis of recent studies to give you practical and scientifically documented information.

Presentation of the two species of deer

Before dealing with the damage it is useful to know the biological characteristics that explain their behavior and impacts on vegetation.

Definition of roe deer (Capreolus capreolus)

The roe deer is a small deer present in the woods, edges and meadows of Europe. Its modest dimensions, approx from 75 to 100 cm at the withers, gives it a limited range of action in height.

Its feeding behavior favors low grazing and the consumption of shoots and buds, which makes it particularly harmful to low crops, young plants and hedges. The deer also performs streaks, generally less intense and at the beginning of the year.

Definition of deer (Cervus elaphus)

The red deer is a large deer, sometimes impressive in size, ranging from From 1.2 to 2.5 meters at the withers in large dogs. It frequents forests, thickets and bocage plains.

Its height and robustness explain the various damages caused by deer, in particular on the taller plants and the very marked patches of fregola. Differences in physiology and behavior lead to distinct protective measures.

Comparison of damage types

Comparing the nature and intensity of attacks helps guide choices for the protection and management of the population.

Height of damage

The maximum height achieved by leafing and leafing differs markedly between the two species. Deer can reach and damage vegetation up to from 100 to 170 cmsometimes up to 180 cm, which affects young trees and tall shrubs.

The deer, being smaller, generally limits its damage to from 50 to 70 cmwith exceptional cases up to 110 cm. This means that tall crops or guards placed at low heights are less effective against deer.

Smear intensity

The streaks correspond to the rubbing of the horns against the trunks during the rut and to territorial marking. Deer make particularly aggressive stripes during the mating season, in September-October, capable of removing the bark from the entire circumference of a tree.

Deer test earlier, often in July-August, and these are generally less destructive. However, repeated on the same surface, they compromise natural regeneration and expose the tree to pathogens.

Types of Deer Damage

The attacks involve different ways of damaging vegetation, each with distinct technical and economic consequences.

Navigation

Browsing refers to the consumption of shoots, leaves and buds. In young plants and crops, this pressure reduces growth, distorts plants and delays production. In the long term, a high level of exploration prevents successful forest regeneration.

Sensitive plant species include deciduous species and some fruit plants in orchards and vegetable gardens. Repeated seasonal sampling ends up weakening the stems, promoting cancer and increasing the mortality of young trees.

Bark

Barking occurs when the animal removes shreds of bark, especially in winter or by rubbing the wood. The deer leaves large marks, on the order of from 8 to 9 mmevidence of significant mechanical action.

The deer, smaller in size, produces finer marks around 4 to 5 mm. Even moderate injury can expose the tree to infection and reduce its resistance to climate stress.

Spread

The smears have a double effect, mechanical and sanitary. They serve both as a behavioral signal and cause damage that compromises the structure of the tree. On young trees, complete burr can cause mortality.

Softwoods and some hardwoods are particularly affected during rut. The accumulation of barking, grazing and littering significantly reduces a stand’s ability to renew itself naturally, changing the composition and structure of the forest.

The following table summarizes the main damage characteristics and protection recommendations for each species.

Protection of crops and gardens

Collective or individual prevention and protection vary depending on the species and the intensity of the pressures.

Need for adequate protection

In front of the deer the protections must be higher and more robust. Fences equipped with six wires and reaching up to 180cm they are commonly recommended to limit intrusions and protect medium-height trees.

For deer, less imposing systems such as four-wire fences or level nets are often sufficient 120cm maximum. Height adjustment, choice of materials and regular maintenance are crucial to efficiency. For practical advice on garden protection and how to protect your plants, check out our guides.

Protection costs

Installing individual deer protection in the forest significantly increases planting costs. According to observations, these devices can increase the expense of from 50 to 60% compared to standard protections, given the height and robustness required.

For operators, budget planning must include equipment life, installation and maintenance labor, as well as monitoring. Adapting the solution to the local context optimizes cost-effectiveness.

Economic impact of the damage

Damage caused by deer affects agricultural and forestry resources, with direct and indirect financial consequences.

Economic consequences

In an overpopulation situation, deer can devastate forest plots, vegetable gardens and vegetable gardens, resulting in yield losses and replanting costs. Forestry operators report a slowdown in the renewal of stands and a worsening of the quality of the wood.

Compensation schemes exist for farmers, under specific conditions. For example, some compensation is possible when it is greater than 3% of the surface is affected, or by a quantity of the order of From 100 to 230 eurossubject to appraisal and validation of administrative criteria.

Compensation problems

Historically, private gardens have been poorly covered by compensation schemes, which has left private owners exposed to damages with no recourse. Since 2018, legislative and regulatory developments have begun to correct these situations, but inequalities persist.

Compensation procedures often require evidence of harm, expert opinions and thresholds that can be difficult for an individual to reach. This highlights the need for coordinated local management and to take into account not only economic issues, but also landscape and quality of life.

Overabundance and biodiversity

Deer demographics have a profound impact on ecosystems, forest composition, and associated wildlife.

Overpopulation problem

The deer population has increased in recent decades, influenced by climate factors, abundance of food and reduced predation. This population explosion puts pressure on vegetation and threatens the composition of populations.

A high population leads to a reduction in the diversity of the herbaceous and woody layers, prevents the regeneration of sensitive species and modifies the habitat for other species. The loss of diversity can be long-lasting if management adjustments are not made.

Proposed measures

Several proposals aim to limit the effects of high populations, including regulatory measures through controlled hunting and administrative classifications to enable number-reduction actions. Some stakeholders want classification as a species that can be regulated more broadly (ESOD, or classification as pests in certain areas).

Management decisions must balance the protection of natural areas, health security and human activities. An integrated approach, combining physical protections, population monitoring and targeted actions, is often the most relevant for preserving biodiversity and economic interests.

In summary, deer and roe deer produce damage that differs in size and behavior, which requires distinct technical and management responses. 😊