A dummy tiger guarding crops (Kuenzang Nima)

Use of Dummy Tigers to Repel Wild Animals (Bhutan)

Tag Zuenma Laglen Thabtey Lothog Sungni (སྟག་རྫུན་མ་ལག་ལེན་འཐབ་སྟེ་ལོ་ཐོག་སྲུང་ནི།)

Description

Dummy tigers are used to scare off crop predators. This can be considered a SLM technology because it protects the crops from wild animals which in turn prevents erosion (both soil and water), adds nitrogen to the soil (i.e., by leguminous crops), and helps in nutrient cycling. Furthermore, time is freed up for the farmer to carry out other SLM activities.

In the region of Drochukha, Bhutan, the foremost challenge faced by rural communities is crops damage by wildlife. Land users in this area contend with damage inflicted by a variety of wild animals, including wild boar, barking deer, sambar deer, monkeys, porcupines, bears, and rats. To mitigate crop damage by wildlife, the land users of Drochukha have implemented a unique solution by strategically placing dummy tigers to deter these animals and safeguard their crops.
In 2018, a woman from Drochukha initiated the idea of using dummy tigers to protect crops, and it proved to be highly successful. Following this, other residents also adopted the practice. Farmlands situated near the forest's periphery experience the most significant crop damage by wild animals. By placing dummy tigers near the forest's edge, the land users have not only reduced wildlife attacks in the peripheral regions but also significantly decreased such incidents in the central areas. To protect their crops from wild animals, they procured a dummy tiger at a cost of Nu. 3,380 (about USD 40) from Bajo town in Wangduephodrang Dzongkhag and another dummy tiger costing Nu. 2,000 (about USD 25) from the Indian market in Jaigaon. The land users constructed a raised wooden platform by placing four wooden poles in the ground and adding planks over them to support the dummy tigers, ensuring that they faced the forest.
The implementation of dummy tigers (two) has yielded numerous benefits for 21 households in the region. With the adoption of this innovative approach, Drochukha farmers have been able to increase their crop production and rejuvenate previously unused lands. Dummy tigers effectively safeguard standing crops and prevent wildlife depredation. Maintaining standing crops in the fields is essential to prevent erosion, both of soil and water, while also contributing nitrogen to the soil through the cultivation of leguminous crops and facilitating nutrient cycling. An important aspect of employing dummy tigers is that it prevents land users from resorting to fatal methods of crop protection that may involve the killing of wildlife. Human-wildlife conflicts have thus been reduced. The primary current concern of the land users of Drochukha is the fading colour of the dummy tigers, and they are eager for improved interventions that may involve mobile and sound-producing tigers.
The Agriculture Machinery Centre (AMC) and the Dzongkhag Agriculture Office (DAO) have joined forces to create an IoT-based animal-repellent system. This system, positioned at the field's periphery, comprises three primary components: a speaker, a receptor card, and an amplifier. Once connected to an owner's smartphone, the system allows for the remote playback of various animal sounds. One system, consisting of a single receptor card, can be linked to up to five users. Additionally, two LED flashlights are integrated into the system to deter wild boars at night through powerful pulse flashes. The complete system comes at a cost of Nu. 30,000. Moreover, in their most recent endeavors, AMC and DAO are currently developing a robotic tiger capable of moving its head and limbs, enabling it to patrol the guardhouse and serve as a further deterrent to wildlife. The technology is being piloted as a project to evaluate its effectiveness in the field through trials.

Location

Location: Drochukha Chiwog, Goenshari Gewog, Punakha Dzongkhag, Bhutan

No. of Technology sites analysed: single site

Geo-reference of selected sites
  • 89.74066, 27.7269

Spread of the Technology: applied at specific points/ concentrated on a small area

In a permanently protected area?: Yes

Date of implementation: 2018

Type of introduction
IoT-based animal repellent (Kuenzang Nima)
IoT-based animal repellent - Flash light (Kuenzang Nima)

Classification of the Technology

Main purpose
  • improve production
  • reduce, prevent, restore land degradation
  • conserve ecosystem
  • protect a watershed/ downstream areas – in combination with other Technologies
  • preserve/ improve biodiversity
  • reduce risk of disasters
  • adapt to climate change/ extremes and its impacts
  • mitigate climate change and its impacts
  • create beneficial economic impact
  • create beneficial social impact
Land use
Land use mixed within the same land unit: Yes - Agroforestry

  • Cropland
    • Annual cropping: cereals - barley, cereals - maize, cereals - rice (wetland), cereals - wheat (winter)
    • Perennial (non-woody) cropping: banana/plantain/abaca, herbs, chili, capsicum
    • Tree and shrub cropping: avocado, citrus
    Number of growing seasons per year: 1
    Is intercropping practiced? Yes
    Is crop rotation practiced? Yes
  • Forest/ woodlands
    • (Semi-)natural forests/ woodlands. Management: Selective felling, Non-wood forest use
    Tree types (mixed deciduous/ evergreen): n.a.
    Products and services: Timber, Fuelwood, Other forest products

Water supply
  • rainfed
  • mixed rainfed-irrigated
  • full irrigation

Purpose related to land degradation
  • prevent land degradation
  • reduce land degradation
  • restore/ rehabilitate severely degraded land
  • adapt to land degradation
  • not applicable
Degradation addressed
  • soil erosion by water - Wt: loss of topsoil/ surface erosion
  • soil erosion by wind - Et: loss of topsoil
  • biological degradation - Bc: reduction of vegetation cover
SLM group
  • Human-wildlife conflict management
SLM measures
  • structural measures - S11: Others

Technical drawing

Technical specifications
The tiger toys are placed 3 meters above the ground. To ensure stability, the toys are placed on the planks supported by strong poles.
Author: Ongpo Lepcha

Establishment and maintenance: activities, inputs and costs

Calculation of inputs and costs
  • Costs are calculated: per Technology unit
  • Currency used for cost calculation: Nu.
  • Exchange rate (to USD): 1 USD = 80.0 Nu.
  • Average wage cost of hired labour per day: 800
Most important factors affecting the costs
n.a.
Establishment activities
  1. Procurement of tiger toys. (Timing/ frequency: Before cropping season)
  2. Construction of guard houses using any available materials to place the tiger toys. (Timing/ frequency: Before cropping season)
  3. Placing the tiger toys. (Timing/ frequency: Cropping season)
Establishment inputs and costs
Specify input Unit Quantity Costs per Unit (Nu.) Total costs per input (Nu.) % of costs borne by land users
Labour
Labor man/day 1.0 800.0 800.0 100.0
Other
Tiger toy No. 1.0 3380.0 3380.0 100.0
Tiger toy No. 1.0 2000.0 2000.0 100.0
Total costs for establishment of the Technology 6'180.0
Total costs for establishment of the Technology in USD 77.25
Maintenance activities
n.a.
Total maintenance costs (estimation)
5346.0

Natural environment

Average annual rainfall
  • < 250 mm
  • 251-500 mm
  • 501-750 mm
  • 751-1,000 mm
  • 1,001-1,500 mm
  • 1,501-2,000 mm
  • 2,001-3,000 mm
  • 3,001-4,000 mm
  • > 4,000 mm
Agro-climatic zone
  • humid
  • sub-humid
  • semi-arid
  • arid
Specifications on climate
Dry sub tropical
Slope
  • flat (0-2%)
  • gentle (3-5%)
  • moderate (6-10%)
  • rolling (11-15%)
  • hilly (16-30%)
  • steep (31-60%)
  • very steep (>60%)
Landforms
  • plateau/plains
  • ridges
  • mountain slopes
  • hill slopes
  • footslopes
  • valley floors
Altitude
  • 0-100 m a.s.l.
  • 101-500 m a.s.l.
  • 501-1,000 m a.s.l.
  • 1,001-1,500 m a.s.l.
  • 1,501-2,000 m a.s.l.
  • 2,001-2,500 m a.s.l.
  • 2,501-3,000 m a.s.l.
  • 3,001-4,000 m a.s.l.
  • > 4,000 m a.s.l.
Technology is applied in
  • convex situations
  • concave situations
  • not relevant
Soil depth
  • very shallow (0-20 cm)
  • shallow (21-50 cm)
  • moderately deep (51-80 cm)
  • deep (81-120 cm)
  • very deep (> 120 cm)
Soil texture (topsoil)
  • coarse/ light (sandy)
  • medium (loamy, silty)
  • fine/ heavy (clay)
Soil texture (> 20 cm below surface)
  • coarse/ light (sandy)
  • medium (loamy, silty)
  • fine/ heavy (clay)
Topsoil organic matter content
  • high (>3%)
  • medium (1-3%)
  • low (<1%)
Groundwater table
  • on surface
  • < 5 m
  • 5-50 m
  • > 50 m
Availability of surface water
  • excess
  • good
  • medium
  • poor/ none
Water quality (untreated)
  • good drinking water
  • poor drinking water (treatment required)
  • for agricultural use only (irrigation)
  • unusable
Water quality refers to: surface water
Is salinity a problem?
  • Yes
  • No

Occurrence of flooding
  • Yes
  • No
Species diversity
  • high
  • medium
  • low
Habitat diversity
  • high
  • medium
  • low

Characteristics of land users applying the Technology

Market orientation
  • subsistence (self-supply)
  • mixed (subsistence/ commercial)
  • commercial/ market
Off-farm income
  • less than 10% of all income
  • 10-50% of all income
  • > 50% of all income
Relative level of wealth
  • very poor
  • poor
  • average
  • rich
  • very rich
Level of mechanization
  • manual work
  • animal traction
  • mechanized/ motorized
Sedentary or nomadic
  • Sedentary
  • Semi-nomadic
  • Nomadic
Individuals or groups
  • individual/ household
  • groups/ community
  • cooperative
  • employee (company, government)
Gender
  • women
  • men
Age
  • children
  • youth
  • middle-aged
  • elderly
Area used per household
  • < 0.5 ha
  • 0.5-1 ha
  • 1-2 ha
  • 2-5 ha
  • 5-15 ha
  • 15-50 ha
  • 50-100 ha
  • 100-500 ha
  • 500-1,000 ha
  • 1,000-10,000 ha
  • > 10,000 ha
Scale
  • small-scale
  • medium-scale
  • large-scale
Land ownership
  • state
  • company
  • communal/ village
  • group
  • individual, not titled
  • individual, titled
  • Family land
Land use rights
  • open access (unorganized)
  • communal (organized)
  • leased
  • individual
Water use rights
  • open access (unorganized)
  • communal (organized)
  • leased
  • individual
Access to services and infrastructure
health

poor
good
education

poor
good
technical assistance

poor
good
employment (e.g. off-farm)

poor
good
markets

poor
good
energy

poor
good
roads and transport

poor
good
drinking water and sanitation

poor
good
financial services

poor
good

Impacts

Socio-economic impacts
Crop production
decreased
increased

Quantity before SLM: 125kg
Quantity after SLM: 250kg
Previously, farmers could only harvest approximately 125 kg of potatoes when planting 250 kg of seeds. Now, they can harvest nearly 1500 kg of potatoes from the same amount of seeds.

expenses on agricultural inputs
increased
decreased


Daytime crop guarding against monkeys is no longer necessary, allowing land users to allocate their time to other productive activities.

farm income
decreased
increased


With no need for daytime crop guarding, land users can engage in off-farm activities, earning up to Nu. 800 per day. This has proven to be advantageous in increasing their overall farm income.

diversity of income sources
decreased
increased


Off-farm earning has become possible. Production and marketing of other seasonal crops and high-value crops are possible.

workload
increased
decreased


The continuous daytime guarding is not required anymore.

Socio-cultural impacts
food security/ self-sufficiency
reduced
improved


The land users can produce enough for self-consumption and commercialization.

cultural opportunities (eg spiritual, aesthetic, others)
reduced
improved


The use of lethal methods for crop protection is no longer necessary, thus preventing the killing of wild animals

Ecological impacts
pest/ disease control
decreased
increased


The control of vertebrate pests, especially monkeys, has been very successful.

Off-site impacts
Protection of farms further from the land users' farms
None
None


Toy tigers protect farms further from the land users' farms also. There is no intrusion of wild animals into the villages.

Cost-benefit analysis

Benefits compared with establishment costs
Short-term returns
very negative
very positive

Long-term returns
very negative
very positive

Benefits compared with maintenance costs
Short-term returns
very negative
very positive

Long-term returns
very negative
very positive

The technology is cost effective and every individual can afford it easily.

Climate change

Gradual climate change
annual temperature increase

not well at all
very well
annual rainfall increase

not well at all
very well
Climate-related extremes (disasters)
local rainstorm

not well at all
very well
local thunderstorm

not well at all
very well
local hailstorm

not well at all
very well
local windstorm

not well at all
very well
extreme winter conditions

not well at all
very well
epidemic diseases

not well at all
very well
insect/ worm infestation

not well at all
very well

Adoption and adaptation

Percentage of land users in the area who have adopted the Technology
  • single cases/ experimental
  • 1-10%
  • 11-50%
  • > 50%
Of all those who have adopted the Technology, how many have done so without receiving material incentives?
  • 0-10%
  • 11-50%
  • 51-90%
  • 91-100%
Number of households and/ or area covered
Out of the 21 households, 10 have embraced the technology. The reason for this is primarily that the remaining 11 households have their lands situated in the central part of the community and do not share boundaries with the forests.
Has the Technology been modified recently to adapt to changing conditions?
  • Yes
  • No
To which changing conditions?
  • climatic change/ extremes
  • changing markets
  • labour availability (e.g. due to migration)
  • Modern technology integration
The Agriculture Machinery Centre (AMC) and the Dzongkhag Agriculture Office (DAO) have joined forces to create an IoT-based animal-repellent system. This system, positioned at the field's periphery, comprises three primary components: a speaker, a receptor card, and an amplifier. Once connected to a owner's smartphone, the system allows for the remote playback of various animal sounds. One system, consisting of a single receptor card, can be linked to up to five users. Additionally, two LED flashlights are integrated into the system to deter wild boars at night through powerful pulse flashes. The complete system comes at a cost of Nu. 30,000. Moreover, in their most recent endeavors, AMC and DAO are currently developing a robotic tiger capable of moving its head and limbs, enabling it to patrol the guardhouse and serve as a further deterrent to wildlife. The technology is being piloted as a project to evaluate its effectiveness in the field through trials.

Conclusions and lessons learnt

Strengths: land user's view
  • The crop production is enhanced.
  • Lethal methods for crop protection have been avoided.
  • Overall farm income is increased after the adoption of technology.
Strengths: compiler’s or other key resource person’s view
  • No major threats to the external environment and user friendly technology.
  • Tiger toy protects the crops from wild animals. Standing crops in the field is important to prevent erosion (both soil and water), add nitrogen to the soil (e.g., by leguminous crops), and for nutrient cycling. The other important aspect is toy tiger prevents wildlife depredation.
Weaknesses/ disadvantages/ risks: land user's viewhow to overcome
  • The colour fading of tiger toys could be a problem in the future. Repaint toy tigers.
  • Financial burden on the land users. Implement a cost-sharing mechanism.
Weaknesses/ disadvantages/ risks: compiler’s or other key resource person’s viewhow to overcome
  • The wild animals especially the monkeys might get used to tiger toys. A robotic tiger producing sounds in certain intervals would be the next best innovation, which is already under process.

References

Compiler
  • Tshering Yangzom
Editors
  • chenga Tshering
Reviewer
  • Rima Mekdaschi Studer
  • William Critchley
  • Joana Eichenberger
Date of documentation: July 19, 2023
Last update: June 4, 2024
Resource persons
Full description in the WOCAT database
Linked SLM data
Documentation was faciliated by
Institution Project
Links to relevant information which is available online
This work is licensed under Creative Commons Attribution-NonCommercial-ShareaAlike 4.0 International