Biological & Natural History Materials
Biological and natural history objects remain chemically and physically responsive long after collection. Bone, horn, shell, skin, feathers, fur, insects and mounted specimens can crack, fade, shed, attract pests, retain salts or carry historic contaminants.
Effective preservation depends on identifying the material, understanding how the specimen was prepared or mounted, and separating stable age from active deterioration. These objects often demand environmental restraint, close inspection and careful handling rather than aggressive treatment.
Explore biological and natural history materials
Fifteen detailed topics organised around material understanding, active risks and fragile evidence.
Understand the material
Start with the object’s biological origin, structure and sensitivity before choosing storage, display or handling methods.
Control active deterioration
Recognise salts, pests, mould and composite failure early enough to isolate risk and prevent wider collection damage.
Protect fragile evidence
Manage mounted, fibrous, contaminated and hazardous specimens through careful inspection, support and handling.
A preservation problem rarely belongs to one material alone
A mounted bird may combine skin, feathers, glass eyes, wire, wood, plaster, adhesives, paint and paper labels. A shell object may carry salts, coatings, repairs and old display mounts. The visible surface is only one part of the preservation system.
The practical task is therefore to identify the dominant vulnerabilities, understand where materials interact and choose controls that reduce the greatest risk without creating a new one elsewhere.
A practical preservation sequence
1. Identify what the object is made from
Distinguish bone, horn, antler, ivory-like material, shell, feather, fur, skin, insect material and modern substitutes. Similar-looking materials can react very differently.
2. Separate inherent change from active damage
Natural ageing may be slow and stable, while cracking, powdering, mould, pest debris, odour or fresh shedding may indicate an active process that needs attention.
3. Map the object as a system
Many specimens combine biological material with wire, wood, glass, adhesives, paint, fillers and labels. The weakest interface often determines the preservation risk.
4. Control environment and access
Use stable humidity, moderate light, clean enclosures, good airflow where appropriate and low-disturbance storage. Avoid rapid environmental change and repeated handling.
5. Isolate hazards and uncertainty
Quarantine suspect pests or mould, treat historic pesticide residues as potentially hazardous and avoid untested cleaning or chemical treatments.
6. Document condition and change
Record structure, losses, cracks, surface deposits, pest evidence, labels and previous treatments so future change can be distinguished from long-standing damage.
Important distinctions
Organic does not mean uniform
Bone, horn, shell, feathers, skin and insect material do not share one safe humidity, cleaning or handling method. Preservation begins with material-specific judgment.
Old damage is not always inactive
Historic holes, staining or surface loss may coexist with current pest, mould or salt activity. Date, compare and inspect rather than assuming stability.
Visual stability is not structural stability
A specimen may appear intact while internal mounts, adhesives, stuffing or supports are failing. Movement, vibration and handling can reveal hidden weakness.
Preservation includes people and legality
Some specimens carry toxic residues, species restrictions or cultural sensitivities. Safe stewardship includes documentation, responsible access and legal awareness.
Detailed topics
Bone, Antler & Horn
Understand how dense animal-derived materials respond to humidity change, handling, oils, surface cleaning and long-term ageing.
Cracking, Drying & Delamination
Recognise cracking, lifting, drying and layered failure in bone, horn and antler before instability becomes severe.
Ivory & Sensitive Organic Materials
Preserve ivory-like and other sensitive organic materials while accounting for identification, legal and ethical concerns.
Legal & Ethical Sensitive Materials
Identify when species restrictions, cultural sensitivity, documentation or responsible stewardship affect preservation decisions.
Shell, Coral & Marine Materials
Care for brittle, porous and salt-sensitive marine-derived materials without accelerating surface loss.
Salts & Surface Loss in Marine Materials
Recognise powdering, flaking, salt movement and active surface disruption in shell, coral and marine objects.
Taxidermy & Mounted Specimens
Manage composite specimens whose skin, hair, feathers, mounts, eyes, fillers and internal structures age differently.
Pest Risk in Taxidermy & Natural History
Identify frass, exit holes, loose fibres, hair loss and other evidence of active or historic pest activity.
Mould Risk in Taxidermy & Organic Specimens
Understand how damp storage, low airflow and contamination create mould risk across organic specimens.
Insects & Entomological Collections
Protect pinned insects, drawers and cases from vibration, pests, light, humidity change and handling damage.
Fragile Mounted Specimens
Assess failure in pins, adhesives, labels, mounts and delicate body parts within framed, cased or mounted specimens.
Feathers, Fur & Hair
Preserve vulnerable surfaces that can fade, shed, absorb odours, attract pests and suffer mould or handling damage.
Historic Pesticides & Toxic Residues
Recognise when legacy treatments may create handling hazards, residues or specialist assessment needs.
Biological Degradation & Contamination
Understand deterioration caused by mould, pests, odour, contamination, historic treatments and organic breakdown.
Handling Fragile Biological Specimens
Reduce damage and exposure risk when moving, inspecting or displaying fragile biological objects.
Related topics
Environmental Control
Manage humidity, temperature, light, pollutants and airflow across sensitive collection materials.
Pest Management
Build inspection, quarantine and response systems that reduce infestation risk across a collection.
Mixed-Material Objects
Understand preservation conflicts where biological material is combined with metal, wood, glass, paper or adhesives.
Handling, Access & Display
Reduce accidental damage when examining, moving, photographing or displaying fragile objects.