British Wildlife Flashcards
Wildlife casualties
- 1). Trauma - dog bites, human injury, RTA, Predation
- Manage injury or euth at triage
- 2). Debilitation - starvation, parasitism, infection
- Support + Tx or euth
Native raptors casualties
- Traumatic - euth if unable to fly + breed, rehab in specialist centre - plan for 6 w so doesn’t end up w/ 2y problems, muscle wastage, feather damage
- Fx close to joint/open Fx w/ exposed bone, chances of releasing bird drop to < 10%
- ST injuries - better Px, shorted recovery phase
- Poisoning - accidental = lead, shotgun pellets, lead assays - cheap
- Non-accidental poisoning - birds of prey living on gamebird premises chemical - rat-bat -> clotting issues, neurotoxins, guarded Px
Non-accidental poisoning
- Supportive care - cushion, thermal care
- Charcoal - by tube
- Chelation agents
- IVFT - flush toxins through
- Assist feeding - laxatives to purge system
- Manage symptoms e.g. seizures - diazepams, midazolam, or even propofol/isoflurane to prevent intense seizures temporarily
Pigeon presentations
- Trichomoniasis - particularly feral pigeons
- Neurological
- Neonates
Pigeons - Trichomoniasis
- Protozoa parasite
- Colonises oral cavity - cleft in roof of mouth -> feeds into nasal passages + extends down into oesophagus + into roof of crop -> thick plaques of white rough material over mucosa -> discomfort + inability to feed
- Female produce crop milk -> pass to young
- Carnidazole for mild cases / Euthanase severe cases as likely 2y
- If birds of prey consume pigeons, will develop similar lesions
Pigeons - neuro
- Paramyxovirus (pigeon paramyxovirus closely related to Newcastle disease, but can also get chicken Newcastle strain) - keep well away from other birds
- Avian influenza - not high risk, rarely affected, not reservoir
- Botulism - more waterfowl issue, not 1y accum of toxins/problem, if feed off maggots from decomposing carse - will get 2y botulism
- Trauma - fly into windows, more recoverable in 24 - 48 h
- Tx = Euthanasia
Pigeons - neontates
- Fall out of nests/removed from nest by cat
- Rehab or euth
Small bird - cat injury
- Euth if severe
- Reasonable Px - manage medically - AB (amoxicillin + clavulanic acid/fluoroquinolone - not first-line but may be more appropriate if need to give smaller birds PO, Pasteurella can cause septicaemia within 48/72 h)
- Analgesia
+/- Wound care - using lubricants to keep exposed muscle moist so doesn’t desiccate/necrose, applying topical antiseptics, Sx closure - Assist feed regularly - q 4 h if budgie size + smaller
- Admin fluids as needed - esp if de-gloving - lose a lot of fluid, via PO/IV?intraosseous
- Consider repair once stabilised, a lot are puncture wounds + don’t need Sx
- Maintain at warm temps - if cold will deplete weight faster
Juveniles incapable of independence
- Support + rehab of appropriate - if just fallen back in nest + parents around, put back, better chance of survival
- Avoid imprinting - manage w/ minimal contact, rear in groups - recognise as own flock, better environment, experienced staff, species-relevant ‘puppets’ for feeding - seasonally, social + age grouping
- Move to rehab facility
- Euth if no pot to rehabilitate
Granivore baby pigeon neonatal support
- 20% BW/day
- Parrot liquid feed = 5% dextrose, short-term alternative
- Feed q 4 h - check crop empty before - palp over front of bird, if full delay - don’t want to overfeed, admin by soft crop tube - don’t overheat, no greater than body temp
- Monitor weight BID, adjust feeding if not gaining weight, want steady inc + regular crop emptying, if not emptying regularly, inc feeding interval/if emptying but no weight gain, can alter vol
- Provide suitable ‘nest’ - enclosed in little area, don’t want them to walk around too early or risk of splay leg - twisting of long bones, multiple birds - stay huddled together
- Avoid imprinting e.g. species-relevant ‘puppets’ for feeding, move to crèche rearing (into flock)/social group when possible
- Soft release via aviary, still got skills to learn until full release
Swifts + swallows
- Struggle to take off when landed - if grounded, try chucking out from height
- If lift up + drop to ground will need support
- Triage and support if dehydrated or underweight
- Release from height, depends on time of year, may need to wait for following spring
Swans
Debilitation
- Lead intoxication (neuro signs) - old shotgun pellets in vegetation, old fishing weights
- Fishing hook ingestion - ingest bait, hook lodged in mouth/oesophagus -> pos abscess formation
- Aspergillosis - chronic consequence of debilitated swan, hepatic + weight loss signs, DDx = avian TB, chronic weight loss + ill-thrift signs
- Social issues - territorial established pair on lake will attack + potentially drown + skill all swans that have invaded their territory
- Triage + investigate
- Local swan groups for rehab + release
Swans - fishhook injury / pharyngeal injury - removal
- Release barbs of fish hook
- Sx removal of hook if cannot physically remove - cut down over oesophagus - via palp/radiographs -> reflect skin -> incised into oesophagus + remove hook, pull hook out through incision, cut line off and pull out of mouth (dec contamination) -> close via inverting suture pattern -> skin closure
- If abscess - leave open/marsupialised
- Analgesia - Meloxicam +/-
butorphanol + NSAIDs - Antibiotic cover
Swan - fishhook injury, post Sx
- Maintain in semi-aquatic enclosure if possible, some access to water (Prolonged dry docking (will need tube-feeding) limits normal behaviours and potentiates 2y problems)
- Feed problems - don’t maintain on dry for too long, risk of bumble foot
- Herbivore/omnivore - 10% BW/day as maintenance -> inc to 15% in recuperating bird as 2 feeds/day
- Feed insectivore/omnivore diet - blended insects + granivore/herbivore
diet - Dog/lamb tubes - hole of sufficient size
- Tube feed - consider pharyngotomy tube (if sloughing/oesophageal abscesses) for severe injuries, suture in place
Lead intoxication
- Commonly affects waterfowl
- Chelation therapy - Sodium calcium
edetate IM daily; Oral chelation - IV fluids (flush out) - via superficial ulna vein on inside of ulna/easier access via medial tarsal vein (keep dry-docked, not ideal if in water), bolus administration, 2 x maintenance
- If unable to stand will need additional support - muscle flaccidity, important to raise front of chest off the ground, to breathe, need to be able to move their keel bone