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Camera-trap software helps an island program hunt feral cats

On Kangaroo Island, eVorta AI found 97.9% of 492 feral cat images against 95.3% for staff; with 4G cameras, the board estimates A$2.15 million saved over three years.

2
Benefit status
Reported
Evidence
Claimed by the parties
Source published
Sources
1 publication

Benefits

Benefit

EVorta correctly classified 482 of 492 cat images (97.9%) against 469 (95.3%) for staff

Awaiting review

Outcome identifiers

Unresolved

Not reviewedUnresolved

Category

Reduced Task Cost

Awaiting review

Status

Reported benefit

Awaiting review

Beneficiary groups

Organizations.

Awaiting review

Beneficiaries

Unresolved

Not reviewedUnresolved

Reach

Unresolved

Not reviewedUnresolved

Distribution and access

Unresolved

Not reviewedUnresolved

Duration

Unresolved

Not reviewedUnresolved

Expected?

Yes

Awaiting review

Costs and harms

Unresolved

Not reviewedUnresolved

AI system

System

EVorta online AI image classification platform, with 4G-connected Swift Enduro camera traps

Awaiting review

Model

This is an explicit unresolved assignment: the sources on record do not settle this question.

Not reviewedUnresolved

Release

Unresolved

Not reviewedUnresolved

Provider

Unresolved

Not reviewedUnresolved

Role

Unresolved

Not reviewedUnresolved

Configuration

Unresolved

Not reviewedUnresolved

Inputs and outputs

Unresolved

Not reviewedUnresolved

Autonomy

Unresolved

Not reviewedUnresolved

Workflow

Field staff had already classified the same images, which allowed a direct comparison. 4G cameras sent images to the cloud without site visits.

Awaiting review

Human oversight

Unresolved

Not reviewedUnresolved

Relation to AI

EVorta and staff classified the same 101,586 images, so the authors measure the detection of the AI against human review directly; the cost savings are modeled.

Awaiting review

AI contribution

EVorta and staff classified the same 101,586 images, so the authors measure the detection of the AI against human review directly; the cost savings are modeled.

Awaiting review

Measurement

Studies

Controlled observational. [1]

Fully reviewed: supporting details for Studies

Review date: 29 October 2026.

Sources: [1]

Study design

Controlled observational. [1]

Fully reviewed: supporting details for Study design

Review date: 29 October 2026.

Sources: [1]

Measurement

Image and sequence classification compared between eVorta and staff; cost and emissions from a decision tool with program inputs. [1]

Fully reviewed: supporting details for Measurement

Review date: 29 October 2026.

Sources: [1]

Setting and sample

101,586 images from 42 cameras, 11 November 2020 to 9 September 2021; 492 cat and 155 echidna images. [1]

Fully reviewed: supporting details for Setting and sample

Review date: 29 October 2026.

Sources: [1]

Measures

Correct classifications, false negatives, false positives; cost over three years. [1]

Fully reviewed: supporting details for Measures

Review date: 29 October 2026.

Sources: [1]

Comparison

Experienced field staff. [1]

Fully reviewed: supporting details for Comparison

Review date: 29 October 2026.

Sources: [1]

Results

97.9% against 95.3% of cat images; one against 11 missed sequences; A$2.15 million estimated saving with 4G. [1]

Fully reviewed: supporting details for Results

Review date: 29 October 2026.

Sources: [1]

Additional value from AI

Fewer missed cats; 81% lower estimated monitoring cost with 4G cameras. [1]

Fully reviewed: supporting details for Additional value from AI

Review date: 29 October 2026.

Sources: [1]

Limitations

2,751 false cat alerts against five by staff; costs modeled; one program; written by the deployer, with no eVorta author or funding. [1]

Fully reviewed: supporting details for Limitations

Review date: 29 October 2026.

Sources: [1]

Denominators

Program monitoring cameras. [1]

Fully reviewed: supporting details for Denominators

Review date: 29 October 2026.

Sources: [1]

Materials for replication

Decision tool in the supplement. [1]

Fully reviewed: supporting details for Materials for replication

Review date: 29 October 2026.

Sources: [1]

Money

Kind of value

The kind of monetary value is unclear.

Not reviewedUnresolved

Amount

The monetary value is not established.

Not reviewedUnresolved

Currency and prices

The currency and price basis are unclear.

Not reviewedUnresolved

Period and unit

The period and unit of the monetary estimate are unclear.

Not reviewedUnresolved

Realization

Whether the monetary value was realized is unclear.

Not reviewedUnresolved

Recipients and payers

The recipients and payers are unclear.

Not reviewedUnresolved

Gross or net

Whether the monetary figure includes costs is unclear.

Not reviewedUnresolved

Included costs

The costs included in the estimate are unclear.

Not reviewedUnresolved

Comparison

The financial comparison is not established.

Not reviewedUnresolved

Method

The method used to calculate monetary value is unclear.

Not reviewedUnresolved

Return and payback

The return on investment or payback period is not established.

Not reviewedUnresolved

People and places

Participants

Developer: eVorta. Operator: Kangaroo Island Landscape Board, Feral Cat Eradication Program.

Awaiting review

Jurisdictions

Benefit: Dudley Peninsula, Kangaroo Island, South Australia, Australia. Developer: Australia. Operator: Australia.

Awaiting review

Ownership and control

Unresolved

Not reviewedUnresolved

Dependencies

Unresolved

Not reviewedUnresolved

Cross-border connections

Unresolved

Not reviewedUnresolved

Geopolitical implications

The geopolitical implications are unclear.

Not reviewedUnresolved

Follow-up

Conditions for replication

4G coverage must reach the camera sites. Staff must screen the many false positives.

Awaiting review

Replication attempts

Unresolved

Not reviewedUnresolved

Later findings

Unresolved

Not reviewedUnresolved

Availability

Unresolved

Not reviewedUnresolved

Institutional decision

A relevant institutional decision has not been established.

Not reviewedUnresolved

Grounds

The grounds for an institutional decision are unclear.

Not reviewedUnresolved

Action and result

The result of an institutional decision is not established.

Not reviewedUnresolved

Success criterion

The criterion for a successful institutional decision is unclear.

Not reviewedUnresolved

Evidence

Source numbers

AIBD-0663-source-0001

Awaiting review

Citations

Numbered references below.

Awaiting review

Language

Unresolved

Not reviewedUnresolved

Source relationships

Operator

Awaiting review

Original evidence

Unresolved

Not reviewedUnresolved

Access and versions

Unresolved

Not reviewedUnresolved

Supported findings

Unresolved

Not reviewedUnresolved

Evidence strength

The deployer's account. Sources: the deployer's peer-reviewed study. The cited evidence includes no independent source and no finding by a regulator or court. [1]

Fully reviewed: supporting details for Evidence strength

Review date: 29 October 2026.

Sources: [1]

Missing evidence

Unresolved

Not reviewedUnresolved

Grades

Assessed benefits

Organizations.

Awaiting review

Depth

Organizations: 2.

Awaiting review

Reasons

Organizations: The program detected more cat images and sequences than staff did (67 of 68 sequences against 57), with an estimated A$2.15 million saved with 4G cameras.

Awaiting review

Observed or intended

Unresolved

Not reviewedUnresolved

Rubric

Unresolved

Not reviewedUnresolved

Assessor and date

Unresolved

Not reviewedUnresolved

Alternative assessments

Unresolved

Not reviewedUnresolved

Fill

The deployer's account

Awaiting review

Entry details

Kind

The case describes an evaluation or a study. A deployer's comparison of AI and staff classification with a cost model. [1]

Fully reviewed: supporting details for Kind

Review date: 29 October 2026.

Sources: [1]

Field

Conservation.

Awaiting review

Purpose

EVorta was built to classify species in camera-trap images and send alerts. Faster and more complete detection of feral cats is that purpose.

Awaiting review

Dates

Source published: 24 June 2024. Updated: 29 October 2026.

Awaiting review

Stage

The system was used in a pilot. The program compared eVorta with staff on archived images and tested 4G cameras in a field trial; the authors model costs for three years of running. [1]

Fully reviewed: supporting details for Stage

Review date: 29 October 2026.

Sources: [1]

Version

SHA-256: d0ce64fb8e09…

Awaiting review: supporting details for Version

SHA-256 of the public case, its assessments, and its displayed answers and notes, excluding its own identifier and the derived coverage summary.

References

Other identifiers

Unresolved

Not reviewedUnresolved

Category mappings

Unresolved

Not reviewedUnresolved

Citable summary

Unresolved

Not reviewedUnresolved

Revisions

1 revision. Latest: 29 October 2026.

Awaiting review

Sources

  1. Peer-reviewed study Deployer

    Smith J, Wycherley A, Mulvaney J, et al. Man versus machine: cost and carbon emission savings of 4G-connected Artificial Intelligence technology for classifying species in camera trap images. Sci Rep. 2024;14:14530.

Cite this case

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Version d0ce64fb8e09, archived in the edition of 29 October 2026

Benefit marks

Depth

The number and color show the depth of a benefit.

  1. Depth 1. A convenience, or time or money saved.
  2. Depth 2. A measurable improvement in a result or ability.
  3. Depth 3. A lasting change, an ability restored, or a risk removed.
  4. Depth 4. A serious harm averted or a serious condition resolved in time.
  5. Depth 5. A life or livelihood preserved, or a change documented across a population.

Beneficiary

  • Circle: a person
  • Square: an organization
  • Triangle: society

Evidence

  • Solid. A court or regulator found a benefit, or researchers independently studied it.

  • Hatched. Independent reporting.

  • Outline. Claimed by the parties. Only the people or organizations involved, or sources whose independence has not been assessed, support the benefit.

The fill changes with the evidence. The depth color stays the same.

How benefits are assessed