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Dr. Ashton Hollwarth (UK)

BSc BVMS CertACP (Zoo Med) ANZCVS (Avian Medicine & Surgery) DipECZM (Avian) MRCVS
Diplomat of the European College of Zoological Medicine in Avian Medicine and Surgery

EBVS European Specialist in Small Animal Surgery

Current Position

Avian and Exotics clinician

Education and Experience

Murdoch University (2015) – Bachelor of Science (Veterinary Biology), Bachelor of Veterinary Medicine & Surgery
University of Edinburgh (2020) – Certificate of Advanced Veterinary Practice in Zoological Medicine
Australian and New Zealand College of Veterinary Scientists (2022) – Membership by examination in Avian Medicine & Surgery Chapter
European College of Zoological Medicine residency in Avian Medicine & Surgery (2019-2022)
Diplomat of the European College of Zoological Medicine in Avian Medicine & Surgery (2024)

Georg graduated from the Veterinary University of Vienna in 2006, where he also completed a rotating small animal internship and a three-year ECVS approved residency program in small animal surgery. 2015 Georg moved to UK and worked as a specialist small animal surgeon in international renowned referral centers (Animal Health Trust, Dick White Referrals). In 2018 Georg returned back to Austria where he is CEO and head surgeon of a busy referral centre. Beside his clinical work, Georg has published articles in peer reviewed journals and has lectured and been invited as a speaker at numerous conferences and CPD courses at national and international level.

Teaching Experience

Webinar presentations: IfeVet, Vets Now, Great Western Exotics
Improve International day courses and wetlabs: Rabbit dentistry
Course presenter in IfeVet UK Postgraduate Certificate in Exotic Animals

Research

• Byron-Chance, D., Gomez, L., Saraiva, S., Hollwarth, A.J., Esquivel, E. and Anthony, T. (2024). Spontaneous Wing Tip Edema in Captive Birds of Prey: Review of 41 Cases in the United Kingdom (2004–2022). Journal of Avian Medicine and Surgery, 38(3).
• Gomez Prieto, L., Byron-Chance, D., Hollwarth, A.J. and Dutton, T.A.G. (2025). Rebound tonometry intraocular pressure reference values for conscious adult Egyptian vultures (Neophron percnopterus). American Journal of Veterinary Research, pp.1–6.
• Hollwarth, A.J and Dutton, T.A.G. ‘Retrospective analysis of pelvic limb fracture management in companion psittacines (60 cases)’, Journal of Avian Medicine and Surgery, 37(2), pp. 165-174.
• Byron-Chance, D.H., Gomez, L., Hollwarth A.J. and Dutton, T.A.G. ‘Outcomes and Complications Associated with Caudal Thoracic and Abdominal Air Sac Cannulation in 68 Birds’, Journal of Avian Medicine and Surgery 37(2), pp. 144-154.
• Hollwarth, A.J., Esmans, M.C., Hermann, A., and Dutton, T.A.G. (2023) ‘Heterotopic ossification bone formation in the frontal bones of an African grey parrot (Psittacus erithacus)’, Journal of Avian Medicine and Surgery. 36(4), pp. 388-393.
• Hollwarth, A.J., Pestell, S.T., Byron-Chance, D.H. and Dutton, T.A.G. (2022) ‘Mortality outcomes based on ASA grade in avian patients undergoing general anaesthesia’, Journal of Exotic Pet Medicine, 41, pp14-19.
• Hollwarth, A.J., Froelich, F. and Stidworthy, M.F. (2022) ‘Hormonal implant-associated soft tissue sarcoma in a domestic ferret (Mustela putorius furo)’, Veterinary Record Case Reports, 10(1).
• Hollwarth, A.J. and Vickery, S. (2022). Nurse-led rabbit clinics. The Veterinary Nurse, 13(4), pp.162–167.
• Hollwarth, A.J., Reese, D.J. and Dutton, T.A.G. (2021) ‘Osseous Migration of a Perforating Gastrointestinal
Foreign Body in an Indian Runner Duck (Anas platyrhynchos domesticus)’, Journal of Avian Medicine and
Surgery, 35(3), pp. 361-366.
• Vickery, S. and Hollwarth, A.J. (2021). Health and husbandry of companion parrots. The Veterinary
Nurse, 12(10), pp.463–471.
• Vickery, S. and Hollwarth, A. (2021) ‘How to nurse wildlife patients’, The Veterinary Nurse, 12(3), pp. 139-145.
• Hollwarth, A. and Vickery, S. (2020) ‘Small Mammal Anaesthesia Nursing’, The Veterinary Nurse, 11(3), pp.
138-146.
• Hollwarth, A. and Vickery, S. (2019) ‘How to Nurse the Avian Patient’, The Veterinary Nurse, 10(8), pp. 438-
443.

Awards

European Board of Veterinary Specialists® recognised specialist in Avian Medicine & Surgery (2024)
Pioneer’s Class of 30 under 30, London Vet Show (2022)
• Recognised as an Advanced Practitioner in Zoological Medicine by the Royal College of Veterinary Surgeons,
United Kingdom (2021)