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Rehabilitation of wildlife casualties requires a licence and a large investment of time, money and resources. It is mainly in the animal’s best interest to transfer it to an appropriately trained and equipped individual/organisation as soon as possible.
Before attempting to capture a wildlife casualty:
HELP NEEDED
HELP NOT REQUIRED
IT DOES NEED RESCUING, WHAT NEXT?
FIRST try to call relevant contact number from CONTACT page for further advice
Otters are strong animals with a dangerous bite, do not handle unless confident
WANT TO ATTEMPT CAPTURE
DON’T WANT TO ATTEMPT CAPTURE
Equipment
Blanket, gauntlet type gloves, long handled nets, soft headed broom, dog grasper
Puppy crate or rigid wire mesh container e.g. cat trap/crush cage
Ideally at least 2 people
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© Colin Seddon |
© Becki Lawson |
© Offaly SPCA |
DOG GRASPER IDEAL CAPTURE METHOD |
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Dog grasper capture (e.g. under a garden shed)
Entanglement / entrapment capture (e.g. caught in fencing)
Ideally vet/ rehabilitator can come and assess the otter’s condition in person
If not, assess otter’s condition with vet/rehabilitator over the phone
If decision is made to capture the otter, follow instructions below:
Caught in snare
Unconscious casualty capture (e.g. hit by car on road)
OR..
Trap capture (if mobile)
Net capture (if in an enclosed area)
Box capture (if in an enclosed area)
Capture notes
If casualty is on a road, attempt capture from road side and herd away from road
Consider personal safety on roads: reflective jackets, warning signs etc
Crouch down when approaching – you appear less of a threat
Approach slowly, stopping if animal appears ready to flee
TRANSPORTATION
Sturdy carrier – wire mesh or solid container with secure lid, ideally a mesh crush cage from the vet
Dog carrier/puppy crate
In an emergency, if otter was unconscious, if only short duration of transport, and only temporarily; two rigid plastic fish boxes could be used if tied tightly together
Ventilation
Avoid direct sunlight – danger of overheating
Cover container with towel, darkness will reduce stress
HANDLING
NEVER lift an otter by its tail
Do not handle unnecessarily
Once captured do not try to calm animal by talking to it
Keep other domestic animals out of sight
ANAESTHESIA
Otters do not tolerate sedation/anaesthesia well and MUST be actively brought out of the anaesthetic
SHORT TERM CARE ADULT
See SUPPLIERS page for food and equipment mentioned below
Housing
Are VERY destructive, will bite and chew. If teeth damaged, otter may be un-releasable
Escape artists!! Will climb out of any container if not fully enclosed
Cage must be large enough for otter to stand up and turn around in
House in quiet area away from domestic animals and children
Darken the container to reduce stress
Bedding can be straw or hay if obtainable, otherwise line container with newspaper
Ideally solid walls! concrete, stone, thick wood, rigid plastic
Suggestions:
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Warmth
Wrap in a warm towels if otter very sick and unable to stand
Place container in warm area inside house
Feeding
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Step by Step:
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© Chelsea Collins |
Housing – cub
House in a cage or solid wooden box
Use towels on top of newspaper for bedding
Keep indoors, in a quiet darkened place, away from children and domestic animals
Only handle for feeding
If older, heavier, lively and climbing, see housing in Husbandry Adult section above
Warmth
The cub should feel warm to the touch
Warm up slowly with warm towels if very cold
If under 400g, or very sick, the cub needs to be kept warm; part of the container needs to be roughly 30˚C.
A hot water bottle wrapped in a towel can be used
Beware overheating can also kill so give enough space that the cub can move away from the heat
If the cub is cold it will be unwilling to feed
Toileting
VERY IMPORTANT!
Blind cubs need help urinating and defecating
Toilet at regular intervals: 2 hourly initially, moving to longer intervals as dictated by the animal
Before and after each feed gently stroke their genital and anal area with damp soft tissue / cotton wool for about 60 seconds until urine and/or faeces are produced
If the cub’s eyes are open, still toilet him until you are certain he is urinating and defecating by himself before you stop toileting altogether
FEEDING
Rehydration solution/ ‘milk’ suggestions:
ALL feeds should be lukewarm
(24hrs of rehydration solution feeds is fine if alternatives are not possible)
Only handle for feeding (for frequency see below)
DANGER – Aspiration Pneumonia – inhaling fluid into the lungs
If a bubble of liquid appears at the nose or the cub starts sneezing or shaking its head, stop feeding immediately and tilt the head down allow any fluid to drain out. Dab with tissue, take a break, and then start again very slowly
Preventative measures:
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© Nadia Collins |
Introducing ‘milk’
1st feed – rehydration solution
2nd feed – rehydration solution
3rd feed – ¾ rehydration solution, ¼ milk (formula as above)
4th feed – ½ rehydration solution, ½ milk
5th feed – ¼ rehydration solution, ¾ milk
6th feed – milk
Faeces
Good – soft and dark
On milk formula faeces will be pale yellow/white and curdled looking. This is NORMAL for milk diet
Bad – pale, runny, watery
Seek veterinary attention if unsure or worried
If using milk formula then change back to rehydration fluids for 24hrs
Sterilise all feeding equipment
Once faeces look normal again, slowly reintroduce milk formula
Bottles/equipment
Quantity &Frequency (ROUGH guide)
Weight |
Approximate age |
Quantity per feed |
Frequency |
200 g |
2 weeks |
2.5ml |
8 feeds per day |
600 g |
4 weeks |
10ml |
6 feeds per day |
1200 g |
7 weeks |
24ml |
5 feeds per day |
Theoretically cubs may be fed up to 10-20% body weight per day, depending on appetite
Table above is ROUGH guide, each individual is different
Never feed an animal so much fluid that its tummy becomes hard and distended
Frequency
If very young, especially if eyes still closed, feed 2-3 hourly, through the day and 4hourly during the night
If older and lively feed every 4hrs during the day, last feed 10pm, first feed 5 or 6am
If they are unwilling to wake up and feed, extend the gap between feeds by ½ hour
EXAMPLE
Assuming you have a 1.5kg otter, roughly 2mths old, crawling around, eyes open
Feed 150-300g per day over 5 feeds, so feed roughly 30-60g per feed
Winding
After feeding, take a few minutes to rub the cub’s back and encourage winding
Hygiene
Keep feeding utensils in a deep bowl of sterilising solution e.g. Milton
Use clean feeding utensils for each feed
After use, dismantle feeding equipment and clean thoroughly in warm soapy water, rinse, then replace in the sterilising bowl
Rinse utensils before each feed
LONGER TERM CARE INFO FOR REHABILITATORS
Rehabilitation of wildlife casualties requires a licence and a large investment of time and resources. It is mainly in the animal’s best interest to transfer it to an appropriately trained and equipped individual/organisation as soon as possible.
Before attempting to capture a wildlife casualty:
Read GENERAL PUBLIC section first. Extra information for long term husbandry below
Housing
Extremely destructive, can dig, chewing on cage can damage their teeth and potentially ruin their chance of release
Ideally outdoor run with shelter:
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© Chelsea Collins |
Box for shelter, ideally wooden or solid plastic, draught free, ideally with angled entry and exit tunnel
Straw or hay for bedding
Fresh water for drinking
Constant access to water is unnecessary initially. After treatment and when fit enough to swim, a rigid container with fresh water can be added to the enclosure
Sufficient area to exercise on land, not too much that re-capture is made impossible
Big leafy branches for hiding, enrichment, and to reduce stress
Located in quiet area away from domestic pets
| Feeding Variety of fresh white fish, e.g. whiting, or if fussy, try trout. Supplement with ‘Fish Eater Tablets’ inserted into the mouth of the fish or crushed and smeared all over the fish Heavy shallow bowl of drinking water |
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Hand-rearing should not be undertaken unless:
(Email <info@irishwildlifematters.ie> if you acquire an orphan, you will be put in touch with other orphan carers)
Extra info for long term husbandry: Warmth Weight |
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© Chelsea Collins |
Development in the wild
Birth: eyes closed
2-3 weeks: start crawling
4-5 weeks: eyes open
7 weeks: first solid food eaten, increasing activity levels
8 weeks: permanent molars erupt
12 weeks: swimming
Feeding
Rehydration solution – Lectade or equivalent
Ideally a half and half mixture of 'Multimilk' and 'Milk Matrix 30/55'
Canine milk replacement e.g. Esbilac or Lactol – no additional vitamins needed
Bottles/equipment
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© Chelsea Collins |
Records
Routine records should be maintained of daily weight, times of each feed, quantities of milk consumed, urine/faeces production and general condition/demeanour
Winding
Gripe water, or equivalent, if becomes a problem
Faeces (spraints)
Good – soft and dark
On milk formula, faeces will be pale yellow/white and curdled looking. This is NORMAL for milk diet
Bad – pale, runny, watery
Seek veterinary attention
Withdraw food for 24hrs; give only rehydration fluids (ideally at least 50ml/kg/day)
Sterilise all feeding equipment
Once faeces look normal, slowly reintroduce milk formula
Potential problem - penis sucking |
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© Chelsea Collins |
ANAESTHESIA
Otters do not tolerate sedation/anaesthesia well and MUST be actively brought out of the anaesthetic
Careful assessment and appropriate health checks should be carried out prior to release, as to the risks of released animals introducing new diseases into the wild population/environment.
Release criteria/considerations
Need to be wild – wary/scared of humans, domestic animals and any other natural predators
Must be physically fit, mentally sound, stable body weight for over 7 days
Can’t be released if underweight, unable to recognise/eat normal diet etc
Must be of an appropriate weight for the age, sex, and time of year for the species
Do not release in winter unless it has sufficient body weight to cope with the cold
Ideally return to original location unless dangerous or unsuitable
Release away from roads, species specific predators, areas where they could cause damage
Consider natural history of the animal and the location of local wild groups of these animals
Release during a period of favourable weather.
Ideally identify animal in some way e.g. microchip/tag, for post release monitoring/identification
Preferred habitat
Inhabit lakes, rivers, streams, marshes, coast line.
Holt is dug in river bank with underwater entrances.
Mainly eat fish but also eat frogs, crayfish, crabs, and other aquatic invertebrates and other small animals and birds.
HARD RELEASE (direct release)
Adults
Hard release technique
The animal is simply allowed to exit a transport container with no further care or feed provision.
Hard release candidates
Hard release technique only suitable if animal rescued as an adult and only if in captivity for short period of time, and only if to be released where originally found.
Release timing
Release adults as soon as possible
Try not to release during winter months
Species specific considerations
Release habitat must have an adequate food supply to accommodate successive groups of otters over several years.
Ensure area not susceptible to pollution problems.
Avoid conflict areas e.g. fish farms/small angling lakes
Investigate acceptance of the release by landowners/fishermen
Within a sub-optimal otter population
Technique
Ideally return to exact location animal was rescued.
Open carrying cage and let animal leave in its own time.
Release at dusk.
SOFT RELEASE (gentle or gradual release)
Cubs (sometimes adults)
Soft release technique
Soft release aims to slowly reintroduce the animal to the wild while still in a comfort zone e.g. cage it was reared in, and allow the animal to leave the cage once confident and independent.
It involves continuing to care for animals at the release site, and aims to compensate for difficulties of newly released animals finding food and shelter in a new environment.
Soft release candidates
Essential release method for hand reared animals.
If more than one young animal in care, if practicable, try to form a release group.
Release group - try to have mixed genders, appropriately matched age group.
Also suitable for adults that have been in care for a long period of time, or animals that cannot be released back to where they were found and so have to establish a new territory.
Release timing
Release spring/summer when cub over 12mths of age.
Species specific considerations
Release habitat must have an adequate food supply to accommodate successive groups of otters over several years.
Ensure area not susceptible to pollution problems.
Avoid conflict areas e.g. fish farms/small angling lakes
Investigate acceptance of the release by landowners/fishermen
Within a sub-optimal otter population
Technique
Temporary cage placed in release location.
Their own familiar sleeping box/artificial holt placed within caged area, cub provided with water and only natural food, at dusk, in the enclosure, for 2-4 weeks.
Animal fed only natural foods it will come across in the wild
Cage opened one evening and left in-situ for animal to come and go until it feels confident enough not to return.
Food provided, decreasing in quantity, until the animal no longer returns
Soft release may take weeks -months.
“The Minister may grant a licence to a person to have in possession, for a reasonable period of time —
*Compulsory licence details at end of document*
Let us not waste time complaining about the excessive bureaucratic legislation covering wildlife today. The intent was to provide protection for wildlife and the data is valuable.
If we don’t want to be legislated upon, or don’t like current legislation, we must offer legislative solutions. Apply for your licences but also email your ideas for a more practicable solution for ‘policing wildlife rehabilitation’ in Ireland, to info@irishwildlifematters.ie
“Never doubt that a small group of thoughtful, committed citizens can change the world.
Indeed, it is the only thing that ever has.” (Margaret Mead)
OTTER
Status
Irish Wildlife Act 1976 and Wildlife (Amendment) Act 2000 - protected species
Berne Convention, Appendix 2 – requires strict protection
EU Habitats Directive, Annex 2 and 4 – of European interest, requires strict protection and special conservation areas
SACs - RoI 47, N.I 9
CITES, Appendix 1
Irish Red Data book - Near Threatened
Wildlife (N.I.) Order of 1985 - protected species
Exemptions
None
Safeguards
Full protection
Otters are also protected from accidental harm
Rescue and Rehabilitation
Due to their status as a protected species, a *licence MUST be applied for to the NPWS ‘to possess/retain an injured or disabled wild bird/animal’
Release
Subject to the conditions set out in the licence provided for the possession/retention of a wild bird/animal
Notes
Report suspicious activities or equipment to the NPWS Conservation Ranger (see CONTACTS page)
* For licence application form for the possession/ retention of a wild animal - click HERE
Post to the address below OR email to rose.king@environ.ie
National Parks and Wildlife Service,
Main Street,
Ballybay,
Co Monaghan
Tel: 1 800 405000
This legislation section is not intended to cover all aspect of legislation associated with this particular wildlife species, in all instances, the current legislation and appropriate statutory bodies should be consulted
VETERINARY SECTION - COMMON CONDITIONS
THIS SECTION IS DESIGNED SPECIFICALLY FOR VETERINARY SURGEONS
No significant diseases
Various different diseases diagnosed post mortem in individual animals
Otters occasionally suffer from post-capture myopathy
Clinical Signs - commonly fractures, sometimes ruptured diaphragms, livers or spleens, in-coordination, disorientation, temporary blindness
Diagnosis – examination and radiographs. Especially neck region
Treatment – treat as for shock. Temporary splint and pain relief. Surgery once stabilised
Fractures – mainly cheekbone, pelvis or cervical vertebrae
Leg fracture – Relatively uncommon. External fixation or ideally intermedullary pins may be necessary. Short legs so casts and splints often impossible. Buster collars needed
Pelvic fracture – cage rest, spay female?
Comments – euthanize if amputation required. Remove metalwork before release
Clinical Signs – heat, swelling, pain, puncture wound or laceration, abscess. Mainly head, feet and around the anus
Diagnosis – clinical signs or culture
Treatment – if abscess; drain and treat as open abscess. Fluids as for shock. Broad spectrum antibiotics. Corticosteroids for endotoxaemia. Regular flushing of wound
Fresh open clean wounds - clip, clean and suture if necessary. Use subcuticular suturing and absorbable suture material
Comments - likely to be infected, possibly septicaemic. Careful consideration of release site; possibly release in different area to where found, with fewer otters
Clinical Signs – injury to the limb, chipped teeth from chewing at it, underlying tissue damage
Diagnosis – ligature marks, snare attached, history
Treatment –remove snare under GA. Analgesics and antibiotics. Aggressive fluid therapy
Comments – keep for at least 7 days to monitor for pressure necrosis or self mutilation
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© Offaly SPCA |
© Offaly SPCA |
No significant parasites. Various diagnosed post mortem in individual animals
Ticks or suspected infections can be treated with fenbendazole or ivermectin
Clinical Signs – inflamed, bleeding gums, mouth pain, emaciation, bad breath, drooling
Diagnosis - clinical signs
Treatment - symptomatic
Comments - with all animals, mouth should routinely be checked. Cannot be released if damage results in canines needing removal
Clinical Signs – retinal dysplasia, cataracts, lesions, whitening
Diagnosis - clinical signs
Treatment – symptomatic
Comments – otters rely more on their vibrissae than sight, releasable with only one eye, seen living in the wild, blind in both eyes
Clinical Signs – inflamed, red areas of skin, hair loss
Diagnosis – clinical signs
Treatment – metronidazole for anaerobes. Additional antibiotics in chronic cases
Comments – common
Clinical Signs – rounded cranium, in coordination
Diagnosis – clinical signs, radiography
Treatment – none
Comments – in cubs, euthanasia recommended
Clinical Signs – lethargy, temperature below 37.5˚C
Diagnosis – abnormally low temperature
Treatment – warm up slowly and monitor carefully to prevent hyperthermia
Comments – common due to inactivity if ill/injured. No layer of fat
Clinical Signs – do not normally leave the holt until after 8wks of age, should be over 1kg at this age
Diagnosis – alone above ground weighing less than 1kg
Treatment – see husbandry section for cub above
Comments – cubs born all year round, mainly summer
Candidates
Drug
Technique
VETERINARY SECTION
THIS SECTION IS DESIGNED SPECIFICALLY FOR VETERINARY SURGEONS
VETERINARY DRUGS & DOSAGES TABLE
ANATOMY
SC |
between shoulder blades |
IM |
quadriceps or lumbar |
IO |
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IP |
posterior to umbilicus, needle angled cranially |
IV |
jugular, cephalic |
PO |
in food |
Temperature (°C) |
37 |
Pulse rate (beats per minute) |
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Respiratory rate (breaths per minute) |
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HANDLING FOR EXAMINATION
Care with hygiene handling all wildlife
Ideally observe discreetly before examination; wildlife hide injuries
Sedation sometimes the only way of ex`amining adult otters, use crush cage if necessary
Slip broom into cage to pin head before scruffing with BOTH hands
| Always muzzle when handling, even after sedation or if otter appears to be unconscious Muzzling difficult due to short snout, temporary tape muzzle more appropriate Sharp front claws must be restrained Try not to change grip when handling |
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© Offaly SPCA |
RTA casualties will often be suffering volume related shock, treat as below
TREATMENT FOR SHOCK
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© Chelsea Collins |
Assess every few hours. As soon as stable, examine thoroughly, and decide on a treatment plan or euthanise as appropriate
ANAESTHESIA
Otters do not tolerate anaesthesia well and MUST be actively brought out of the anaesthetic
Reverse or flush anaesthetics out of their system ASAP
Otters ‘come to’ very quickly after reversal
Medetomidine/ketamine, supplemented with isolfurane if necessary, reversed with atipamazole
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Basic equipment for wildlife rescue: |
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• Strong cardboard box |
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Book Discount
Normally priced at €84.00, this manual is offered to users of “Irish Wildlife Matters” at the special price of €56.00
Download order form HERE
Barn Owl Survey

www.birdwatchireland.ie
Email Sightings
(Dead or Alive) to
jlusby@birdwatchireland.ie