Abstract
Free-living birds are often presented to veterinarians at rehabilitation centers as well as in private practice. Information about disease processes and causes of death of indigenous free-living birds can aid the clinician in establishing proper treatment and in the assessment of potential zoonotic risks. For the present study, pathogens as causes of morbidity and mortality were determined by performing a complete necropsy on free-living birds presented to the Clinic for Birds and Reptiles of the University of Leipzig (Germany) that died shortly after admission or were euthanized due to an unfavorable prognosis. Over a 2-year period, 251 birds representing 13 families (Accipitridae, Apodidae, Columbidae, Corvidae, Falconidae, Fringillidae, Hirundinidae, Paridae, Passeridae, Picidae, Strigidae, Sturnidae and Turdidae) were examined. Trauma (62%), including several bite injuries inducing bacterial septicemia caused by Pasteurella multocida, was the most common cause of morbidity. Parasitic disease (18%) was mainly caused by Trichomonas gallinae, Eucoleus dispar and Syngamus trachea. Metabolic disease (13%), including fibrous osteodystrophy, was almost exclusively limited to juvenile specimens. Different Enterobacteriaceae including E. coli, Salmonella Typhimurium DT040 as well as Mycobacterium avium ssp. avium were identified as causal agents of primary bacterial disease (5%). Primary bacterial infection as cause of death or disease was of major importance in nestlings. Viral infections, mycoses and intoxication had minor significance as causes of morbidity.
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Atkinson CT, Thomas NJ, Hunter DB (editors) (2008) Parasitic Diseases of Wild Birds. Ames: Wiley-Blackwell
Brunelli MA, Costa G, Manzini C (1970) Acute gastroenteritis caused by Salmonella abony. Report on food poisoning in summer 1968 in a school in Bologna. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. 1. Abt. Medizinisch-hygienische Bakteriologie, Virusforschung und Parasitologie. Orginale 214:285–288
Daoust PY, Busby DG, Ferns L, Goltz J, McBurney S, Poppe C, Whitney H (2000) Salmonellosis in songbirds in the Canadian Atlantic provinces during winter-summer 1997–98. Canadian Veterinary Journal 41:54–59
Deem SL, Terrell SP, Forrester DJ (1998) A retrospective study of morbidity and mortality of raptors in Florida: 1988–1994. Journal of Zoo and Wildlife Medicine 29:160–164
Dorrestein GM (1997a) Diagnostic necropsy and pathology. In: Avian Medicine and Surgery, Altman RB, Clubb SL, Dorrestein GM, Quesenberry K (editors), Philadelphia: Saunders Company, pp 158–169
Dorrestein GM (1997b) Bacteriology. In: Avian Medicine and Surgery, Altman RB, Clubb SL, Dorrestein GM, Quesenberry K (editors) Philadelphia: Saunders Company, pp 255–280
Ewers CS, Guenther S, Wieler LH, Schierack P (2009) Mallard ducks—a waterfowl species with high risk of distributing Escherichia coli pathogenic for humans. Environmental Microbiology Reports 1:510–517
Fernando MA, Barta JR (2008) Trachea Worms. In: Parasitic Diseases of Wild Birds, Atkinson CT, Thomas NJ, Hunter DB (editors), Ames: Wiley-Blackwell, pp 343–354
Forrester DJ, Foster GW (2008) Trichomonosis. In: Parasitic Diseases of Wild Birds, Atkinson CT, Thomas NJ, Hunter DB (editors), Ames: Wiley-Blackwell, pp 120–153
Ganiere JP, Escande F, Andre G, Larrat M (1993) Characterization of Pasteurella from gingival scrapings of dogs and cats. Comparative Immunology, Microbiology and Infectious Diseases 16:77–85
Gerlach H (1994) Bacteria. In: Avian Medicine: Principles and Application, Ritchie BW, Harrison GH, Harrison LR (editors) Florida: Wingers Publishing Inc., pp 949–983
Jennings AR (1961) An analysis of 1,000 deaths in wild birds. Bird Study 8: 25–31
Joseph CA, Mitchell EM, Cowden JM, Bruce JC, Threlfall EJ, Hine CE, Wallis R, Hall ML (1991) A national outbreak of salmonellosis from yeast flavoured products. Cdr (London: England Review) 1:R16–R19
Korbel R, Gerlach H, Bisgaard M, Hafez HM (1992) Further investigations on Pasteurella multocida infections in feral birds injured by cats. Zentralblatt für Veterinärmedizin. Reihe B 39:10–18
Krone O (2000) Endoparasites in free-ranging birds of prey in Germany. In: Raptor Biomedicine III, Lumeij JT, Remple JD, Redig PT, Lierz M, Cooper JE (editors), Lake worth, FL: Zoological educational Network, Inc., pp 101–116
Lamberski N, Hull AC, Fish AM, Beckmen K, Morishita TY (2003) A survey of the choanal and cloacal aerobic bacterial flora in free-living and captive Red-Tailed hawks (Buteo jamaicensis) and Cooper’s hawks (Accipiter cooperii). Journal of Avian Medicine and Surgery 17:131–135
Mehtner U (2005) Situation of bovine salmonellosis in Germany from 1995–2003 according to the data from the National Animal Disease Reporting System, Berlin. Münchener Tierärztliche Wochenschrift 118:449–455
Millán J, Aduriz G, Moreno B, Juste RA, Barral M (2004) Salmonella isolates from wild birds and mammals in the Basque Country (Spain). Revue scientifique et technique 23:905–911.
Millán J, Negre N, Castellanos E, de Juan L, Mateos A, Parpal A, Aranaz A (2010) Avian mycobacteriosis in free-living raptors in Majorca Island, Spain. Avian Pathology 39:1–6.
Molina-López RA, Valverdú N, Martín M, Mateu E, Obon E, Cerdà-Cuéllar M, Darwich L (2011) Wild raptors as carriers of antimicrobial-resistant Salmonella and Campylobacter strains. Veterinary Record 168:565
Pennycott T, Lawson B, Cunningham A, Simpson V, Chantrey J (2005) Necrotic ingluvitis in wild finches. Veterinary Record 157: 60
Pennycott TW, Park A, Mather HA (2006) Isolation of different serovars of Salmonella enterica from wild birds in Great Britain between 1995 and 2003. Veterinary Record 158:817–820
Pennycott TW, Ross HM, McLaren IM, Park A, Hopkins GF, Foster G (1998) Causes of death of wild birds of the family Fringillidae in Britain. Veterinary Record 143:155–158
Peters M, Kilwinski J, Reckling D, Henning K (2009) Epidemic mortality in greenfinches at feeder stations caused by Trichomonas gallinae—a recent problem in Northern Germany. Kleintierpraxis 54:433–438
Phalen DN, Drew ML, Contreras C, Roset K, Mora M (2005) Naturally occurring secondary nutritional hyperparathiroidism in cattle egrets (Bubulcus ibis) from central Texas. Journal of Wildlife Diseases 41:401–415
Reche MP, Jiménez PA, Alvarez F, García de los Ríos E, Rojas AM, De Pedro P (2003) Incidence of Salmonellae in captive and wild free-living raptorial birds in Central Spain. Journal of Veterinary Medicine. B, Infectious Diseases and Veterinary Public Health 50:42–44
Richardson PRK, Mundy PJ, Plug I (2009) Bone crushing carnivores and their significance to osteodystrophy in griffon vulture chicks. Journal of Zoology 210:23–43
Simbieda J, Johnson CK, Boyce W, Sandrock C, Cardona C (2008) Risk for avian influenza virus exposure at human–wildlife interface. Emerging Infectious Diseases 14:1151–1153
Sleeman JM (2008) Use of wildlife rehabilitation centers as monitors of ecosystem health. In: Zoo and Wild Animal Medicine, Fowler ME, Miller RE (editors), St. Louis: Saunders Elsevier, pp 97–104
Smit T, Eger A, Haagsma J, Bakhuizen T (1997) Avian tuberculosis in wild birds in the Netherlands. Journal of Wildlife Diseases 23:485–487
Steele CM, Brown RN, Botzler RG (2005) Prevalences of zoonotic bacteria among seabirds in rehabilitation centers along the Pacific Coast of California and Washington, USA. Journal of Wildlife Diseases 41:735–744
Tangredi BP, Krook LP (1999) Nutritional secondary hyperparathyroidism in free-living American crows (Corvus brachyrhynchos brachyrhynchos). Journal of Zoo and Wildlife Medicine 30:94–99
Tauni MA, Österlund A (2000) Outbreak of Salmonella typhimurium in cats and humans associated with infection in wild birds. Journal of Small Animal Practice 41:339–341
Taylor DJ, Philbey AW (2010) Salmonella infections in garden birds and cats in a domestic environment. Veterinary Record 167:26–27
Torfoss D, Abrahamsen TG (2000) Salmonella infections from turtles. Tidsskrift for Den norske lægeforening 120:3670–3671.
Tsiodras S, Kelesidis T, Kelesidis I, Bauchinger U, Falagas ME (2008) Human infections associated with wild birds. Journal of Infection 56:83–98
Wobeser GA (2008) Parasitism: costs and effects. In: Parasitic Diseases of Wild Birds, Atkinson CT, Thomas NJ, Hunter DB (editors), Ames: Wiley-Blackwell, pp 3–9
Acknowledgements
The authors like to thank Dr. R. Helmuth and Dr. I. Szabo from the National Salmonella Reference Laboratory, Federal Institute for Risk Assessment, for serotyping of the Salomenlla isolates, and Dr. Rüsch-Gerdes from the National Reference Center for Mycobacteria for further differentiation of the mycobacteria.
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Stenkat, J., Krautwald-Junghanns, ME. & Schmidt, V. Causes of Morbidity and Mortality in Free-Living Birds in an Urban Environment in Germany. EcoHealth 10, 352–365 (2013). https://doi.org/10.1007/s10393-013-0868-9
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DOI: https://doi.org/10.1007/s10393-013-0868-9