Abstract
The white-tailed eagle (Haliaeetus albicilla) suffered a severe population decline due to environmental pollutants in the Baltic Sea area ca. 50 years ago but has since been recovering. The main threats for the white-tailed eagle in Finland are now often related to human activities. We examined the human impact on the white-tailed eagle by determining mortality factors of 123 carcasses collected during 2000–2014. Routine necropsy with chemical analyses for lead and mercury were done on all carcasses. We found human-related factors accounting for 60% of the causes of death. The most important of these was lead poisoning (31% of all cases) followed by human-related accidents (e.g. electric power lines and traffic) (24%). The temporal and regional patterns of occurrence of lead poisonings suggested spent lead ammunition as the source. Lead shot was found in the gizzards of some lead-poisoned birds. Scavenging behaviour exposes the white-tailed eagle to lead from spent ammunition.
Similar content being viewed by others
References
Arnemo, J., O. Andersen, S. Stokke, V.G. Thomas, O. Krone, D.J. Pain, and R. Mateo. 2016. Health and environmental risks from lead-based ammunition: Science versus socio-politics. EcoHealth 13: 618–622.
Balotari-Chiebao, F., A. Villers, A. Ijäs, O. Ovaskainen, S. Repka, and T. Laaksonen. 2016. Post-fledging movements of white-tailed eagles: Conservation implications for wind-energy development. Ambio 45: 831–840.
Bevanger, K., F. Berntsen, S. Clausen, E.L. Dahl, Ø. Flagstad, A. Follestad, D. Halley, F. Hanssen, et al. 2010. Pre- and post-construction studies of conflicts between birds and wind turbines in coastal Norway (Bird-Wind). Report on findings 2007–2010. NINA Report 620, Trondheim, Norway.
Brooke, C.J., and T.V. Riley. 1999. Erysipelothrix rhusiopathiae: bacteriology, epidemiology and clinical manifestations of an occupational pathogen. Journal of Medical Microbiology 48: 789–799.
Burnham, K.P., and D.R. Anderson. 2002. Model selection and multimodel inference: A practical information- theoretic approach, 2nd ed. New York: Springer.
Dahl, E.L., K. Bevanger, G. Nygård, E. Røskaft, and B.G. Stokke. 2012. Reduced breeding success in white-tailed eagles at Smøla windfarm, western Norway, is caused by mortality and displacement. Biological Conservation 145: 79–85.
Damerau, A., E.R. Venäläinen, and K. Peltonen. 2012. Heavy metals in meat of Finnish city rabbits. Food Additives & Contaminants 5: 246–250.
Delahay, R.J., and C.J. Spray (eds.). 2015. Proceedings of the Oxford Lead Symposium. Lead Ammunition: understanding and minimising the risks to human and environmental health. Oxford: Edward Grey Institute, The University of Oxford.
Ecke, F., N.J. Singh, J.M. Arnemo, A. Bignert, B. Helander, Å.M.M. Berglund, H. Borg, C. Bröjer, et al. 2017. Sublethal lead exposure alters movement behavior in free-ranging golden eagles. Environmental Science and Technology 51: 5729–5736.
EFSA (European Food Safety Authority). 2013. Scientific opinion on lead in food. Retrieved 11 April, 2017, from http://www.efsa.europa.eu/en/efsajournal/pub/1570.
Ekblad, C.M.S., S. Sulkava, T.G. Stjernberg, and T.K. Laaksonen. 2016. Landscape-scale gradients and temporal changes in the prey species of the white-tailed eagles (Haliaeetus albicilla). Annales Zoologici Fennici 53: 228–240.
Franson, C. 1996. Interpretation of tissue lead residues in birds other than waterfowl. In Environmental contaminants in wildlife—interpreting tissue concentrations, ed. W.N. Beyer, G.H. Heinz, and A.W. Redmon-Norwood, 265–279. Boca Raton, FL: CRC.
Franson, J.C., and R.E. Russell. 2014. Lead and eagles: demographic and pathological characteristics of poisoning, and exposure levels associated with other causes of mortality. Ecotoxicology 23: 1722–1731.
Heatley, J.J., M.M. Mitchell, A. Roy, D.Y. Cho, D.L. Williams, and T.N. Tully. 2007. Disseminated Mycobacteriosis in a Bald Eagle Haliaeetus leucocephalus. Journal of Avian Medicine and Surgery 21: 201–209.
Heinz, G.H. 1996. Mercury poisoning in wildlife. In Noninfectious diseases of wildlife, ed. A. Fairbrother, G.L. Hoff, and L.N. Locke, 118–127. Ames, IA: Iowa State University Press.
Heinz, G.H., and D.J. Hoffman. 1998. Methylmercury chloride and selenomethionine interactions on health and reproduction in mallards. Environmental Toxicology and Chemistry 17: 139–145.
Helander, B., and T. Stjernberg. 2002. Action Plan for the conservation of White-tailed Sea Eagle (Haliaeetus albicilla). Strasbourg: Birdlife International.
Helander, B., A. Olsson, A. Bignert, L. Asplund, and K. Litzén. 2002. The role of DDE, PCB, coplanar PCB and eggshell parameters for reproduction in the white-tailed sea eagle (Haliaeetus albicilla) in Sweden. Ambio 31: 386–403.
Helander, B., A. Bignert, and L. Asplund. 2008. Using raptors as environmental sentinels: Monitoring the white-tailed sea eagle Haliaeetus albicilla in Sweden. Ambio 37: 425–431.
Helander, B., J. Axelsson, H. Borg, K. Holm, and A. Bignert. 2009. Ingestion of lead from ammunition and lead concentrations in white-tailed sea eagles (Haliaeetus albicilla) in Sweden. Science of the Total Environment 407: 5555–5563.
HELCOM (Helsinki Commision). 2010. Hazardous substances in the Baltic Sea – An integrated thematic assessment of hazardous substances in the Baltic Sea. Baltic Sea Environment Proceedings No. 120B. Retrieved February, 2018, from http://www.helcom.fi/Lists/Publications/BSEP120B.pdf.
Henriksson, K., E. Karppanen, and M. Helminen. 1966. High residues of mercury in Finnish white-tailed eagles. Ornis Fennica 43: 38–45.
Herrmann, C., O. Krone, T. Stjernberg, and B. Helander. 2011. Population development of baltic bird species: White-tailed sea eagle (Haliaeetus albicilla). HELCOM Baltic Sea Environment Fact Sheets. Retrieved May, 2017, from http://www.helcom.fi/baltic-sea-trends/environment-fact-sheets/.
Hoffman, D.J., O.H. Pattee, S.N. Wiemeyer, and B. Mulhern. 1981. Effects of lead shot ingestion on δ-aminolevulinic acid dehydratase activity, hemoglobin concentration and serum chemistry in bald eagles. Journal of Wildlife Diseases 17: 423–431.
Hunt, W.G. 2012. Implications of sublethal lead exposure in avian scavengers. Journal of Raptor Research 46: 389–393.
Hunt, W.G., W. Burnham, C.N. Parish, K.K. Burnham, B. Mutch, and J.L. Oaks. 2006. Bullet fragments in deer remains: Implications for lead exposure in avian scavengers. Wildlife Society Bulletin 34: 167–170.
Iwata, H., M. Watanabe, E.-Y. Kim, R. Gotori, G. Yasunaga, S. Tanabe, Y. Masuda, and S. Fujita. 2000. Contamination by chlorinated hydrocarbons and lead in Steller’s Sea-Eagle and White-tailed Eagle from Hokkaido, Japan. In First symposium on Steller’s and white-tailed eagles in East Asia, ed. M. Ueta, and M.J. McGrady, 96–106. Tokyo: Wild Bird Society of Japan.
Kalisinska, E., J. Gorecki, N. Lanocha, A. Okonska, J.B. Melgarejo, H. Budis, I. Rzad, and J. Golas. 2014. Total and methylmercury in soft tissues of white-tailed eagle (Haliaeetus albicilla) and Osprey (Pandion haliaetus) collected in Poland. Ambio 43: 858–870.
Kenntner, N., F. Tataruch, and O. Krone. 2001. Heavy metals in soft tissue of white-tailed eagles found dead or moribund in Germany and Austria from 1993 to 2000. Environmental Toxicology and Chemistry 20: 1831–1837.
Koivusaari, J., T. Stjernberg, H. Ekblom, and J. Högmander. 2003. Daily body weight, amount of food and time of feeding of white-tailed sea eagles at Finnish winter feeding stations 1992–2000. In: SEA EAGLE 2000. Proceedings from an international conference at Björkö, Sweden, 13–17 September 2000, ed. B. Helander, M. Marquiss, and W. Bowerman. Stockholm: Swedish Society for Nature Conservation/SNF & Åtta.45 Tryckeri AB.
Krone, O., F. Wille, N. Kenntner, D. Boertmann, and F. Tataruch. 2004. Mortality factors, environmental contaminants, and parasites of white-tailed sea eagles from Greenland. Avian Diseases 48: 417–424.
Krone, O., T. Stjernberg, N. Kenntner, F. Tataruch, J. Koivusaari, and I. Nuuja. 2006. Mortality factors, helminth burden, and contaminant residues in white-tailed sea eagles (Haliaeetus albicilla) from Finland. Ambio 35: 98–104.
Krone, O., N. Kenntner, A. Trinogga, M. Nadjafzadeh, F. Scholz, J. Sulawa, K. Totschek, P. Schuck-Wersig, et al. 2008. Lead poisoning in white-tailed sea eagles: causes and approaches to solutions in Germany. In Ingestion of lead from spent ammunition: Implications for wildlife and humans, ed. R.T. Watson, M. Fuller, M. Pokras, and W.G. Hunt. Boise, ID: The Peregrine Fund.
Krone, O., N. Kenntner, and F. Tataruch. 2009. Gefährdungsursachen des Seeadlers. Denisia 27: 139–146 (In German).
Mateo, R. 2009. Lead poisoning in wild birds in Europe and the regulations adopted in different countries. In Ingestion of lead from spent ammunition: Implications for wildlife and humans, ed. R.T. Watson, M. Fuller, M. Pokras, and W.G. Hunt. Boise, ID: The Peregrine Fund.
Müller, K., R. Altenkamp, and L. Brunnberg. 2007. Morbidity of free-ranging white-tailed sea eagles (Haliaeetus albicilla) in Germany. Journal of Avian Medicine and Surgery 21: 265–274.
Nadjafzadeh, M., H. Hofer, and O. Krone. 2013. The link between feeding ecology and lead poisoning in white-tailed eagles. Journal of Wildlife Management 77: 48–57.
Newth, J.L., E.C. Rees, R.L. Cromie, R.A. McDonald, S. Bearhop, D.J. Pain, G.J. Norton, C. Deacon, et al. 2016. Widespread exposure to lead affects the body condition of free-living whooper swans Cygnus cygnus wintering in Britain. Environmental Pollution 209: 60–67.
Nuuja, I. (ed.). 2017. Merikotkien puolesta—WWF:n merikotkatyöryhmän vuosikymmenten taival. Helsinki: WWF Finland report. (For the white-tailed eagles—the journey of the WWF white-tailed eagle working group. In Finnish).
OIE (World Organisation for Animal Health). 2017. Update on highly pathogenic avian influenza in animals (types H5 and H7). Retrieved December, 2017, from: http://www.oie.int/animal-health-in-the-world/update-on-avian-influenza/.
Pain, D.J., I.J. Fisher and V.G. Thomas. 2009. A global update of lead poisoning in terrestrial birds from ammunition sources. In: Ingestion of Lead from Spent Ammunition: implications for wildlife and Humans, ed. R.T.Watson, M. Fuller, M. Pokras, and W.G. Hunt. Boise, ID: The Peregrine Fund.
Provencher, J.F., M.R. Forbes, H.L. Hennin, O.P. Love, B.M. Braune, M.L. Mallory, and H.G. Gilchrist. 2016. Implications of mercury and lead concentrations on breeding physiology and phenology in an Arctic bird. Environmental Pollution 218: 1014–1022.
Redig, P.T., E.M. Lawler, S. Schwartz, J.L. Dunnette, B. Stephenson, and G.E. Duke. 1991. Effects of chronic exposure to sublethal concentrations of lead acetate on heme synthesis and immune function in red-tailed hawks. Archives of Environmental Contamination and Toxicology 21: 72–77.
Saurola, P., J. Valkama, and W. Velmala. 2013. The finnish bird ringing Atlas, vol. I. Helsinki: Finnish Museum of Natural History and Ministry of Environment.
Stauber, E., N. Finch, P.A. Talcott, and J.M. Gay. 2010. Lead poisoning of bald (Haliaeetus leucocephalus) and golden (Aquila chrysaetos) eagles in the US Inland Pacific Northwest Region—an 18-year retrospective study: 1991–2008. Journal of Avian Medicine and Surgery 24: 279–287.
Stjernberg, T., J. Koivusaari, J. Högmander, T. Ollila, S. Keränen, G. Munsterhjelm, and H. Ekblom. 2009. Population size and nesting success of the White-tailed Sea Eagle (Haliaeetus albicilla) in Finland, 2007–2008. Linnut-vuosikirja 2008: 14–21. (in Finnish, English summary).
Sulkava, S., R. Tornberg, and J. Koivusaari. 1997. Diet of the white-tailed eagle Haliaeetus albicilla in Finland. Ornis Fennica 74: 65–78.
Thomas, N.J., D.B. Hunter, and C.T. Atkinson (eds.). 2007. Infectious diseases of wild birds, 9th ed. Ames, ID: Blackwell Publishing.
Tiainen, J., M. Mikkola-Roos, A. Below, A. Jukarainen, A. Lehikoinen, T. Lehtiniemi, J. Pessa, A. Rajasärkkä, et al. 2016. Suomen lintujen uhanalaisuus 2015—the 2015 red list of Finnish bird species. Helsinki: Ympäristöministeriö & Suomen ympäristökeskus.
Wayland, M., and T. Bollinger. 1999. Lead exposure and poisoning in bald eagles and golden eagles in the Canadian prairie provinces. Environmental Pollution 104: 341–350.
Acknowledgements
We want to express our thanks to the people who submitted or reported dead or diseased white-tailed eagles suitable for this study. We warmly thank the competent staff of the Finnish Food Safety Authority, especially Minna Nylund, Perttu Koski, Nina Aalto and Annette Brockmann for their help in post-mortem examinations.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Isomursu, M., Koivusaari, J., Stjernberg, T. et al. Lead poisoning and other human-related factors cause significant mortality in white-tailed eagles. Ambio 47, 858–868 (2018). https://doi.org/10.1007/s13280-018-1052-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13280-018-1052-9