Ethics and the Forensic Scientist in Wildlife Cases

The ethical tensions wildlife forensic scientists face when working for conservation-oriented agencies, handling intelligence, operating in high-corruption environments, and deciding what to publish.

Last updated: 10 Jun 2026

A wildlife forensic scientist walks into every case carrying a conflict that human forensic scientists rarely face as sharply. Their employer is often a conservation agency, a wildlife authority, or an NGO whose mission is explicitly to protect species. The prosecution of traffickers advances that mission. So does a finding that the seized material is from a protected species. The scientist's professional obligation, however, is to report what the evidence actually shows, whether or not that result advances the case.

This tension runs through every part of wildlife forensic practice. It shapes how reports are written, how reference data is shared, how scientists behave when they are embedded in agencies where corruption is endemic, and how they manage the gap between what they know from intelligence channels and what they can say on the stand. The Society for Wildlife Forensic Science (SWFS) has codified a set of ethical principles to navigate these pressures, but principles need context to be useful.

This topic covers the main ethical fault lines: the advocate-versus-neutral-expert tension, the handling of confidential informant intelligence, the special challenges of working in high-corruption source countries, and the debate about publishing reference data that has both scientific and operational value. None of these has a clean answer, but each has a defensible approach that keeps the science credible and the scientist protected.

Key terms

Impartiality: The obligation of a forensic expert to present findings honestly regardless of which party benefits. Impartiality does not mean ignoring the context of a case; it means that the analysis and the conclusion are driven by the evidence, not by the desired outcome.
Advocate expert: An expert who argues a position in the interests of the retaining party rather than providing an objective assessment. Considered unethical in jurisdictions where expert witnesses owe a duty to the court above their duty to the instructing party.
Neutral expert (court's expert): An expert whose primary duty is to assist the court with scientific matters, regardless of who is paying. In several jurisdictions, this duty is codified in the rules of court.
SWFS code of ethics: The Society for Wildlife Forensic Science's professional conduct rules, requiring honesty, transparency about limitations, impartiality, refusal of inappropriate pressure, and separation of scientific analysis from operational intelligence.
Confidential informant intelligence: Information derived from a source whose identity must be protected. In forensic practice, this intelligence may inform what a scientist is asked to look for but must not influence the analysis or appear in the case file without legal review.
Dual-use dilemma: The situation where the same data or method that helps forensic scientists identify illegal trade could also help traffickers design around the detection method, creating a tension between scientific openness and operational security.

The advocate-versus-neutral tension

Your employer wants a conviction. Your duty is to the evidence. These two things can diverge.

In most jurisdictions, an expert witness's primary duty is to the court, not to the party that has retained them. This rule exists to prevent experts from becoming hired guns who tailor conclusions to whoever pays. For human forensic scientists working in government crime laboratories, the rule is explicit and enforced through accreditation frameworks, quality assurance systems, and case review. For wildlife forensic scientists, the infrastructure is thinner.

When a scientist is employed by a conservation NGO, the agency's mandate is conservation, and successful prosecutions are part of that mandate. The pressure to produce a useful result can be subtle, operating through case selection (sending only the strong cases to the lab), report review (asking scientists to soften caveats), or framing (briefing scientists on the prosecution theory before analysis begins). Each of these can bias results without any individual acting in bad faith.

The SWFS code of ethics directly addresses this by requiring members to report all findings, including those that are exculpatory or that undermine the prosecution's case, with the same rigour as incriminating ones. A scientist who finds that a sample does not match the protected species, or that the match probability is lower than the investigator hoped, must say so clearly in the report. The SWFS code also requires scientists to refuse requests to alter or omit findings to suit an anticipated legal strategy.

Handling confidential informant intelligence

The investigator's source told them where to look. The scientist must not carry that into the analysis.

Wildlife investigations, especially those targeting organised trafficking networks, frequently rely on confidential informants. Intelligence from these sources may explain why particular items were seized, why specific suspects are under surveillance, or why a particular shipment was flagged as suspicious. The forensic scientist is sometimes briefed on this intelligence as part of the case context.

The ethical and legal problem is that intelligence is not evidence. It cannot be tested, challenged, or disclosed to the defence without potentially endangering a source. If a forensic report refers, even implicitly, to intelligence by saying something like 'consistent with known trafficking routes through this region,' that reference may constitute disclosure of a protected source or it may prejudice the analysis by revealing assumptions baked in before the science was done.

Keep intelligence and analysis separate: the case file the scientist works from should contain only the physical evidence, chain of custody, and the analytical question. Intelligence should not appear in any document the scientist creates.
Disclose to legal team early: if the scientist knows something from intelligence that is relevant to interpreting a result, tell the lawyer before the report is finalised, not in the witness box. The lawyer can then make the disclosure decision.
Do not let intelligence direct interpretation: a population assignment result should be reported as the data shows it, not rounded toward the population the intelligence says the sample should come from.

These rules are easier to state than to follow in the middle of an active investigation where investigators and scientists share offices and regular briefings. Building a formal information barrier between the intelligence function and the laboratory function, even in small organisations, is worth the administrative cost.

Working in high-corruption environments

Some source countries have enforcement institutions that are themselves part of the trafficking network.

Wildlife crime is disproportionately concentrated in countries where governance is weak and where enforcement agencies may themselves be compromised. A wildlife forensic scientist deployed by an international organisation to assist local enforcement, or working as a consultant to a national wildlife authority, may discover that case files are being shared with trafficking suspects, that results are being altered after submission, or that samples are going missing before analysis.

The SWFS code of ethics requires scientists to report improper conduct through an independent channel. In practice, identifying that channel in a country where the normal reporting chain is compromised requires advance planning. International organisations that conduct wildlife forensic work in high-corruption environments typically establish the following safeguards.

Dual custody of case files
A copy of every case file is held outside the local jurisdiction, either with the international partner organisation or encrypted in secure remote storage, from the moment the case is opened.
Direct reporting channel to international partner
The scientist has a named contact at an independent organisation they can reach outside the local management chain if they observe improper conduct. This channel is established before deployment, not improvised after a problem arises.
Chain-of-custody documentation that the scientist controls
The scientist maintains their own copy of sample intake and transfer records, independent of agency systems, so that any post-submission alteration of the official record is detectable.
Limit single-analyst exposure
Cases that could result in significant prosecutions should have at least two scientists reviewing results, preferably from different institutional affiliations, so that pressure on one individual does not eliminate oversight.

The dual-use dilemma: publishing reference data

Publishing your methods makes the science defensible. It also tells traffickers how you detect them.

Scientific openness is a foundational norm. Reference databases, population assignment methods, and DNA barcoding protocols should be published so that courts can assess them, other scientists can critique them, and defence experts can check the work. Withheld methods cannot be properly challenged in court, which is exactly the argument defence attorneys use to get results excluded under Daubert.

But wildlife forensic data has an operational dimension that most laboratory science does not. If a population assignment study reveals that tigers from a specific population in India can be distinguished from tigers from Myanmar based on particular microsatellite alleles, publishing those discriminatory alleles in full tells traffickers precisely which markers they need to obscure, which geographic labels to fake, and which laundering routes remain undetected. The same information that makes the method scientifically transparent makes it operationally vulnerable.

Dual-use tension: openness supports admissibility; secrecy supports operational security.

The community's emerging consensus, reflected in SWFS guidance and in papers from the UNODC and TRAFFIC, is to separate the scientific method from the operational parameters. The method, the markers used, and the general principles of the analysis should be published in full. The specific population sampling locations, the exact allele frequencies in the current operational database, and the discriminatory thresholds that investigators use to flag suspect shipments can be kept from public release until the investigation cycle that relies on them is complete. This separation maintains scientific integrity for the court while protecting the operational value of the tool.

Conflicts of interest and disclosure obligations

Even the cleanest expert has conflicts. The ethical obligation is to disclose them, not to pretend they do not exist.

A wildlife forensic scientist who developed the barcoding reference database used to identify the species in the current case has a potential conflict: their reputation benefits if the method succeeds. A scientist employed part-time by a conservation organisation that is also providing campaign funding for the prosecution has a financial conflict. These are not disqualifying, but they must be disclosed in the report and in the witness box if asked.

The SWFS code requires members to disclose all relevant interests. This includes financial relationships with parties to the case, prior publications that express a view on the method or the species in question, and prior public statements about the case or the defendant. Courts in most jurisdictions require the same disclosure through their rules on expert evidence. A failure to disclose that later comes out in cross-examination is far more damaging to credibility than the disclosed conflict itself would have been.

Prior publications: if you wrote the paper describing the method being used, say so, and ensure the report cites it accurately.
Funding relationships: grant funding from an organisation with a stake in the outcome should be declared, even if the funding predates the case.
Prior public statements: tweets, conference presentations, or media interviews where the scientist expressed a view on the case, the defendant, or the trafficking network in question must be disclosed.
Role in investigation: if the scientist also assisted in the investigation before the forensic analysis began, this dual role should be explicitly noted.

Worked example

An ivory case where the scientist faced three concurrent pressures

Intelligence, institutional pressure, and a dual-use publication dilemma at the same time.

A wildlife forensic scientist at a research institution receives samples from a large ivory seizure. The investigation is jointly run by the national wildlife authority of a source country and an international conservation organisation that partially funds the research institution. Before analysis begins, the investigator from the wildlife authority briefs the scientist on informant intelligence indicating the shipment originated from a specific national park and was facilitated by a named official within the authority itself.

Three concurrent ethical pressures emerge. First, the intelligence has given the scientist a prior expectation about the population of origin: the analysis must be conducted blind to this expectation, and the intelligence must not appear in the case file. The scientist sets up the analysis without recording the suspected park location in any work document, informs the lab manager of the reason for the blind protocol, and emails the international NGO contact to note that intelligence has been shared and that they are managing it.

Second, the international conservation organisation, which is also a funder, has a public campaign running about ivory from this particular country. The scientist recognises this as a potential bias and documents the funding relationship in the case file and in the eventual report. The organisation's communications staff contacts the scientist asking for a preliminary result for a press release. The scientist declines to provide any result before the analysis is complete and the report reviewed.

Third, the population assignment method being used relies on a sampling database that the scientist's group is preparing to publish. The specific park-level sampling locations are operationally sensitive because the wildlife authority is still conducting arrests. The scientist publishes the method and the marker set on schedule but redacts the precise GPS coordinates of sampling sites from the public data supplement for 12 months, noting the reason in the paper's data availability statement.

Each decision is defensible, documented, and proportionate. The analysis is completed blind, reported honestly (the samples do not assign strongly to any single park, a result that complicates the prosecution's theory), and the report notes the funding relationship and the blind protocol. No result is altered. No intelligence enters the case file. The publication delay is temporary and publicly explained.

Check your understanding

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A wildlife forensic scientist employed by a conservation NGO finds that a seized sample does not match the protected species. What is the correct course of action?

Key Takeaways

Wildlife forensic scientists face a structural conflict between their employer's conservation mission and their legal duty to report findings impartially to the court; the SWFS code requires the legal duty to prevail.
Confidential informant intelligence must be kept separate from forensic analysis to prevent bias and avoid inadvertent disclosure that could endanger a source.
Working in high-corruption environments requires advance protocols: dual custody of files, an independent reporting channel, and scientist-controlled chain-of-custody records.
The dual-use dilemma is managed by publishing the scientific method fully while temporarily withholding operationally sensitive parameters that active investigations depend on.
All conflicts of interest, including funding relationships, prior publications, and prior public statements about a case, must be disclosed in the report and in the witness box.

What is the difference between an advocate expert and a neutral expert in court?

A neutral expert's duty is to the court, not to the party that retained them. An advocate expert argues a position regardless of the evidence. Wildlife forensic scientists employed by conservation agencies can drift toward advocacy because their employer has a direct interest in prosecution outcomes. The SWFS code of ethics and professional rules in most jurisdictions require scientists to resist this and to report findings that help the defence as readily as those that help the prosecution.

How should a wildlife forensic scientist handle confidential informant intelligence?

Intelligence about informants should be strictly separated from forensic casework files. A scientist who knows an informant's identity must not allow that knowledge to influence the analysis. If intelligence would need to be disclosed in court to explain a result, the legal team must be told before the report is filed, because forced disclosure could endanger the informant. The analyst's role ends at the science; operational security decisions belong to investigators and lawyers.

What ethical risks arise when working in source countries with endemic corruption?

Scientists working in or with agencies in high-corruption environments face pressure to alter results, delay reports, or share case intelligence with people who may be connected to trafficking networks. The SWFS code requires scientists to refuse inappropriate requests and report them through an independent channel. Practical protections include never being the sole custodian of case files, maintaining copies outside the jurisdiction, and having a clear escalation route that bypasses the local chain of command if it is compromised.

When should a wildlife forensic scientist publish reference data that could also help traffickers?

Reference databases help identification and should generally be published, because withheld data weakens the scientific community's ability to defend methods in court and allows traffickers to claim inadequate reference coverage. The exception is operational intelligence: the specific geographic sampling locations, population assignment thresholds, or method parameters that investigators actively use to detect laundering should be withheld from publication until the investigation cycle is complete. This tension is managed by separating the scientific method (publish) from the operational parameters (protect).

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Key Takeaways

Wildlife forensic scientists face a structural conflict between their employer's conservation mission and their legal duty to report findings impartially to the court; the SWFS code requires the legal duty to prevail.

Confidential informant intelligence must be kept separate from forensic analysis to prevent bias and avoid inadvertent disclosure that could endanger a source.

Working in high-corruption environments requires advance protocols: dual custody of files, an independent reporting channel, and scientist-controlled chain-of-custody records.

The dual-use dilemma is managed by publishing the scientific method fully while temporarily withholding operationally sensitive parameters that active investigations depend on.

All conflicts of interest, including funding relationships, prior publications, and prior public statements about a case, must be disclosed in the report and in the witness box.

What is the difference between an advocate expert and a neutral expert in court?

How should a wildlife forensic scientist handle confidential informant intelligence?

What ethical risks arise when working in source countries with endemic corruption?

When should a wildlife forensic scientist publish reference data that could also help traffickers?

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Key Takeaways

Key Takeaways