Wildlife Crime Scene Management

Not all wildlife crime scenes look alike, and treating them as if they do costs time and evidence. The four main categories each have a distinct evidence hierarchy, a different decay clock, and different contamination risks.

• Kill site: the highest-priority primary scene. Blood pooling, drag marks, tracks, and wound channels are present but begin degrading within hours. Entry casings and projectiles may be scattered over a wide radius. Bone modification by poachers removing ivory or horn is its own category of toolmark evidence.
• Carcass dump: a secondary scene chosen for concealment. Tyre impressions, footwear, processing tools (hatchets, chainsaws), and discarded packaging become the priority. The carcass itself is now in an advanced stage of decomposition, which adds entomological and botanical evidence.
• Live-animal seizure: time-critical because the animals are suffering and may die. Documentation (species identity, condition, numbers) happens simultaneously with welfare intervention. Packaging materials, waybills, and shipping documents are key exhibits. Biological samples (blood, swabs for DNA) are taken before the animals are moved.
• Transit seizure: a container, parcel, or vehicle intercepted mid-journey. The physical cargo is evidence but so is the documentation trail: shipping manifests, declared species, declared origin, CITES permits (or their absence). The container itself may yield fingerprints, DNA, and fibre transfers from packers.

Urban crime scenes benefit from infrastructure: roads for rapid attendance, electricity for lighting, nearby refrigeration, and evidence submission times measured in minutes. Remote wildlife scenes offer none of these. An investigator who reaches a kill site in a national park may have hiked for five hours in temperatures above 35°C, arrived after dark, and has no prospect of lab facilities for three days. Every protocol must be adapted to function under those conditions.

• Heat and humidity: accelerate bacterial decomposition and degrade biological samples. Swabs destined for DNA must be air-dried before sealing; wet swabs in closed bags degrade within hours in the field.
• Scavengers: hyenas, vultures, and insects modify carcasses rapidly and scatter bones and small items across a wide area. The distribution pattern of scattered bones is itself evidence (a hyena scatter looks different from a human one) but only if the original deposition zone was mapped before scattering began.
• Rain: a single tropical downpour washes bloodstaining, fills footwear impressions, and leaches toxicological samples out of soil. Weather-checking before dispatch shapes scene-management priorities.
• Limited communication: satellite phones and radio allow coordination with a base lab, but the field investigator cannot assume real-time guidance. Standardised field kits with pre-labelled collection materials reduce decision load.

GPS transformed wildlife crime scene documentation by replacing imprecise tape-and-landmark sketches with coordinates repeatable to within a few metres by any investigator, anywhere, years later. A natural landmark used as a reference point may not survive a single growing season; a WGS84 coordinate is permanent and verifiable in court.

1. Record the scene boundary
   Walk the outer perimeter of the scene before entering the inner cordon, marking waypoints at any visible evidence. This gives a spatial envelope for the crime scene map.
2. Mark every exhibit in place
   Before picking up a casing, a tooth, or a snare, record a GPS point at the item. Use a consistent datum (WGS84 is universal) and note satellite count and accuracy estimate in the field log.
3. Document photo stations
   Log the GPS position at which each photograph was taken, together with the bearing and elevation angle. This allows a precise reconstruction of what was visible from each camera position.
4. Record approach and exit routes
   The common approach path is itself a documented element. A track log from the scene boundary to the entry point protects investigators from allegations of having disturbed evidence beyond it.

Modern drone survey supplements GPS point data. A flight over a kill site produces an orthophoto mosaic that shows the spatial relationship between tracks, drag marks, and the carcass at a glance. Southern African anti-poaching units have used drone imagery as prosecution exhibits to show that footprints found near a carcass were consistent with a specific approach route, placing suspects physically at the scene.

SWGMAT guidelines for scene photography were written for indoor forensic contexts, but their three-tier structure applies directly to field settings. Overall shots establish context, mid-range shots orient an exhibit within its immediate surroundings, and close-ups capture the detail that makes comparison possible. Every close-up must include a scale item.

Wildlife-specific additions sit on top of this standard framework. Wound channels require both external photographs and, after necropsy, internal views showing projectile path and tissue damage. Track patterns are photographed as a set (the whole trackway) before individual impressions are documented. Snare injuries on a carcass are photographed under raking light to show groove depth. Collar antenna trajectory and position on a GPS-monitored animal are documented before the collar is removed, because the direction the animal was travelling when it died can reconstruct whether it was moving toward or away from a threat.

First-responder protocol at a wildlife scene follows the same stop-look-record-cordon sequence used in other crime scene types, adapted for terrain where backup may be hours away and the first person on scene is often a ranger rather than a scenes-of-crime officer. The protocol is designed to function as a checklist, not a set of principles requiring expert interpretation at each step.

1. Stop at the outer cordon
   Identify a defensible outer boundary, typically 30-50 m from the obvious evidence. Use tape, natural markers, or GPS waypoints. No one enters except designated personnel.
2. Record initial observations
   From outside the cordon, photograph, note time, weather, and GPS position. Record what can be seen without entering: the carcass, obvious tracks, disturbance signs. This first record becomes important if weather changes rapidly.
3. Establish the common approach path
   Designate a single entry route that avoids the densest evidence. Every person who enters uses this route; footwear prints outside it become potential suspect evidence.
4. Inner cordon around primary evidence
   A tighter boundary around the carcass and immediate area restricts access to the lead investigator. Only essential personnel enter; each entry is logged by name and time.
5. Photograph before touching anything
   Begin the three-tier photographic sequence before any exhibit is moved. In-place photographs are irreplaceable; post-movement documentation is a poor substitute.

Wildlife trafficking is one of the most geographically dispersed crime types. An ivory consignment may originate with a poaching event in Tanzania, pass through Mozambique for processing, be loaded at Dar es Salaam, transit through Hong Kong, and arrive as carved artefacts in Vietnam. Each country has its own laws, its own chain-of-custody requirements, and its own definition of what constitutes admissible evidence. An exhibit that was properly handled in Tanzania may be ruled inadmissible in a Vietnamese court if it was not documented in a form the Vietnamese system recognises.

Effective management in multi-jurisdiction cases requires advance agreement on lead-agency authority, a common evidence numbering system, and documentation in a format that satisfies the highest-standard jurisdiction in the chain. UNODC guidelines and the INTERPOL Wildlife Crime Working Group have developed joint-investigation protocols specifically to address these gaps. Where a ranger does not have police powers, a memorandum of understanding with the national police service should define exactly which agency seizes exhibits, who signs the chain-of-custody forms, and who holds the master exhibit register.