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The Welfare of Free-Living Wild Animals in Europe: Harm Caused by Human Activities

Published online by Cambridge University Press:  11 January 2023

A W Sainsbury*
Affiliation:
Institute of Zoology, Regents Park, London NW1 4RY, UK
P M Bennett
Affiliation:
Institute of Zoology, Regents Park, London NW1 4RY, UK
J K Kirkwood
Affiliation:
Institute of Zoology, Regents Park, London NW1 4RY, UK
*
Contact for correspondence and requests for reprints
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Abstract

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As part of a study into the effects of human activities on the welfare of free-living wildlife, the relative scale and severity of welfare problems in wild mammals and birds in Europe were investigated. Major cases were described and compared in terms of the nature and level of harm (pain, stress and fear) they cause, the duration of these effects and the number of individuals affected. The use of anticoagulant rodenticides, myxomatosis in rabbits, the poisoning of wildfowl by ingested lead shot, the contamination of seabirds with fuel oil, the effects of shooting, injuries due to collisions with road traffic and prédation by domestic cats all severely compromise the welfare of large numbers of animals. Practical approaches to the alleviation and prevention of some of these welfare problems are discussed. We suggest that in assessing the environmental impact of new developments and technologies prior to their implementation, possible consequences to wildlife welfare should always be considered.

Type
Research Article
Copyright
© 1995 Universities Federation for Animal Welfare

References

Anderson, D R and Burnham, K P 1976 Population Ecology of the Mallard VI The Effect of Exploitation on Survival. US Fish and Wildlife Service Resource Publication 128, 66pp. US Fish and Wildlife Service: Washington DC, USAGoogle Scholar
Anderson, I 1994 Should the cat take the rap? New Scientist 142(1926): 1314Google Scholar
Anderson, W L and Sanderson, G C 1979 Effectiveness of steel shot in 3-inch, 12-gauge shells for hunting Canada geese. Wildlife Society Bulletin 7(4): 213220Google Scholar
Atkinson, R P D and Macdonald, D W 1994 Can repellants function as a non-lethal means of controlling moles (Talpa europaea). Journal of Applied Ecology 31: 731736CrossRefGoogle Scholar
Atkinson, R P D, Macdonald, D W and Johnson, P J 1994 The status of the European mole (Talpa europaea) as a pest and its management. Mammal Review 24: 7390CrossRefGoogle Scholar
Baillie, S R and Mead, C J 1982 The effect of severe oil pollution during the winter of 1980-81 on British and Irish auks. Ringing and Migration 4: 3344CrossRefGoogle Scholar
Ballou, J and Lyles, A M 1993 Risk assessment and population dynamics. Journal of Zoo and Wildlife Medicine 24: 398405Google Scholar
Barragán Fernández, B I and López Redondo, J 1993 Soluciones a los Atropellos de Vertebrados en Carreteras. In: Il Simposio Nacional sobre Carreteras y Medio Ambiente. Asociacian Tecnica de Carreteras: SpainGoogle Scholar
Bateson, P 1991 Assessment of pain in animals. Animal Behaviour 42: 827839CrossRefGoogle Scholar
Beck, B, Cooper, M E and Griffith, B 1993 Infectious disease consideration in reintroduction programs for captive wildlife. Journal of Zoo and Wildlife Medicine 24: 394397Google Scholar
Bertelsen, J and Simonsen, N H 1989 Documentation on Bird Hunting and the Conservation Status of the Species Involved: Situation in 1986. The Ministry of the Environment Game and Wildlife Administration: Kalø, DenmarkGoogle Scholar
Bijlsma, R G 1992 De havik Accipiter gentilis in Noord-Nederland in 1965-91: aantalsontwikkeling, voedselkeus, broedsucces en bedreigingen. In: Quist, M (ed) Roofvogels: Bedreigend of Bedreigd? pp 558. Werkgroep Roofvogels Noord- en Oost-Nederland: Appelscha, The NetherlandsGoogle Scholar
Bishop, R A and Wagner, W C 1992 The U.S. Cooperative Lead Poisoning Control Information Program. In: Pain D J (ed) Lead Poisoning in Waterfowl pp 42-45. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Blood, D C, Radostits Ο, M and Henderson, J A 1983 Veterinary Medicine, Sixth edition. Balliere Tindall: London, UKGoogle Scholar
British Wildlife Rehabilitation Council 1993 Quarterly Returns Jan-Mar 1993. BWRC: London, UKGoogle Scholar
Brooks, D P 1986 Rabbits, hares and pikas (Lagomorpha). In: Fowler, M E (ed) Zoo and Wild Animal Medicine, 2nd edition pp 711726. W B Saunders & Co: Philadelphia, USAGoogle Scholar
Bubenik, A B 1989 Sport hunting in continental Europe. In: Hudson, R J, Drew, K R and Baskin, L M (eds) Wildlife Production Systems: Economic Utilization of Wild Ungulates pp 115133. Cambridge University Press: Cambridge, UKGoogle Scholar
Butler, D 1992 Report for Ireland. In: Pain D J (ed) Lead Poisoning in Waterfowl pp 92-93. Proceedings International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Calvo, B and Furness, R W 1992 A review of the use and the effects of marks and devices on birds. Ringing and Migration 13: 129151CrossRefGoogle Scholar
Camphuysen, C J 1989 Beached Bird Surveys in the Netherlands 1915-1988. Nederlands Stookolieslachtoffer-Onderzzoek: Amsterdam, The NetherlandsGoogle Scholar
Castellini, M A 1991 The biology of diving mammals: behavioural, physiological and biochemical limits. Advances in Comparative and Environmental Physiology 8: 105134CrossRefGoogle Scholar
Cayford, J and Percival, S 1992 Born captive, die free. New Scientist 133(1807): 2933Google Scholar
Churcher, J B and Lawton, J H 1987 Predation by domestic cats in an English village. Journal of Zoology, London 212: 439455CrossRefGoogle Scholar
Clark, R B 1984 Impact of oil pollution on seabirds. Environmental Pollution Series A 33: 122CrossRefGoogle Scholar
Clausen, B and Anderson, S 1988 Evaluation of bycatch and health status of the harbour porpoise (Phocoena phocoena) in Danish waters. Danish Review of Game Biology 13: 120Google Scholar
Cowan, D P 1987 Patterns of mortality in a free-living rabbit (Oryctolagus cuniculus) population. Symposia of the Zoological Society of London 58: 5977Google Scholar
Cowan, D P 1991 Rabbit. In: Corbet, G B and Harris, S (eds) The Handbook of British Mammals, 3rd edition pp 146175. Blackwell Scientific Publications: Oxford, UKGoogle Scholar
Desire, D and Recorbet, B 1985 Recensement des Collisions Véhiculés - Grands Mammiferes Sauvages Année 1984. Centre D’Études Techniques de L’Équipement de L’Ouest, Division Infrastructures et Environment: Paris, FranceGoogle Scholar
Dorman, D C 1990 Anticoagulant, cholecalciferol and bromethalin-based rodenticides. Veterinary Clinics of North America: Small Animal Practice 20(2): 339379CrossRefGoogle ScholarPubMed
Environmental Panel of the Advisory Committee on Pesticides 1992 Pesticide Poisoning of Animals 1991: Investigations of Suspected Incidents in Great Britain. MAFF Publications: London, UKGoogle Scholar
Furness, R W 1993 An Assessment of Human Hazards to Seabirds in the North Sea. World Wide Fund for Nature: Godalming, UKGoogle Scholar
Game Conservancy, The 1991 Hints for Using Larsen Traps. The Game Conservancy: Fordingbridge, UKGoogle Scholar
Gaudron, C and Demeautis, G 1992 Traumatologie osseuse chez les oiseaux sauvages. Revue de Médecine Vétérinaire 143: 219223Google Scholar
Genghini, M 1992 Report for Italy. In: Pain D J (ed) Lead Poisoning in Waterfowl. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
George, W G 1974 Domestic cats as predators and factors in winter shortages of raptor prey. Wilson Bulletin 86: 384396Google Scholar
Gibson, J A 1989 Rodent control: past, present and future. Biodeterioration Abstracts 3: 17Google Scholar
Gill, R 1990 Monitoring the Status of European and North American Cervids. Global Environment Monitoring System (GEMS) Information Series No 8. GEMS, United Nations Environment Programme: Nairobi, KenyaGoogle Scholar
Gladfelter, H L 1985 Deer in Iowa. Iowa Wildlife Research Bulletin 38. Iowa Department of Natural Resources: Iowa, USAGoogle Scholar
Götmark, F 1989 Effekter av friluftsliv på fågelfaunan (Effects of Outdoor Recreation on Bird Fauna: a Review). Statens Naturvårdverk Rapport 3682. Solna, SwedenGoogle Scholar
Goujon, M, Antoine, L, Leroy, B and Collet, A 1993 Rapport Gerdau 1992. IFREMER: Plouzané, FranceGoogle Scholar
Graveland, J, van der Wal, R, van Balen, J H and van Noordwijk, A J 1994 Poor reproduction in forest passerines from decline of snail abundance on acidified soils. Nature 368: 446448CrossRefGoogle Scholar
Griffiths, H I 1992 Police prosecutions and badger persecution in England and Wales. Animal Welfare 1: 291296CrossRefGoogle Scholar
Gullett, P A 1987 Oil toxicosis. In: Friend, M (ed) Field Guide to Wildlife Disease, Volume 1 pp 191196. United States Department of the Interior Fish and Wildlife Service Resource Publication 167: Washington DC, USAGoogle Scholar
Harkness, J E and Wagner, J E 1989 The Biology and Medicine of Rabbits and Rodents, 3rd edition. Lea & Febiger: Philadelphia, USAGoogle Scholar
Harris, S 1989 The release of wild mammals after treatment: rationale, problems and techniques. In: Harris, S and Thomas, T (eds) Proceedings of the Inaugural Symposium of the British Wildlife Rehabilitation Council pp 94108. British Wildlife Rehabilitation Council: London, UKGoogle Scholar
Harris, S, Cresswell, W, Reason, P and Cresswell, P 1992 An integrated approach to monitoring badger (Meles meles) population changes in Britain. In: McCuIlough, D R and Barrett, R H (eds) Wildlife 2001: Populations pp 945953. Elsevier Applied Science: London, UKCrossRefGoogle Scholar
Havet, P 1992 French national report. In: Pain D J (ed) Lead Poisoning in Waterfowl p 92. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Heubeck, M 1987 The Shetland beached bird survey, 1979-1986. Bird Study 34: 97106CrossRefGoogle Scholar
Heubeck, M, Meek, E and Suddaby, D 1992 The occurrence of dead auks Alcidae on beaches in Orkney and Shetland, 1976-1991. Sula 6: 118Google Scholar
Holt, G and Droslie, A 1989 Lead poisoning in waterfowl. Norsk-Veterinaeridsskrift 101: 759765Google Scholar
Humburg, D D 1982 Shotshell and shooter effectiveness: lead vs. steel shot for duck hunting. Wildlife Society Bulletin 10: 121126Google Scholar
Humburg, D and Sheriff, S 1980 Lead vs. Steel Shot: Recent Study Results. A Preliminary Report. Missouri Department of Conservation (unpublished report): St Louis, USAGoogle Scholar
Humphreys, D J 1988 Veterinary Toxicology, 3rd edition. Balliere Tindall: London, UKGoogle Scholar
Kinze, C C 1990 Incidental catches of harbour porpoises (Phocoena phocoena) in Danish waters 1986-89: recent data and behavioural implications. International Whaling Commission Report (Special issue 15): 183188Google Scholar
Kirkwood, J K, Sainsbury, A W and Bennett, P M 1994 The welfare of free-living wild animals: methods of assessment. Animal Welfare 3: 257273CrossRefGoogle Scholar
Klotz, R 1992 Report for Germany. In: Pain D J (ed) Lead Poisoning in Waterfowl p 92. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Korbel, R, Gerlach, H, Bisgaard, M and Hafez, H M 1992 Further investigations on Pasteurella multocida infections in feral birds injured by cats. Journal of Veterinary Medicine B 39: 1018CrossRefGoogle ScholarPubMed
Kuiken, T, Bennett, P M, Allchin, C R, Kirkwood, J K, Baker, J R, Lockyer, C H, Walton, M J and Sheldrick, M C 1994a PCBs, cause of death and body condition in harbour porpoises (Phocoena phocoena) from British waters. Aquatic Toxicology 28:13-28CrossRefGoogle Scholar
Kuiken, T, Simpson, V R, Allchin, C R, Bennett, P M, Codd, G A, Harris, E A, Howes, G J, Kennedy, S, Kirkwood, J K, Law, R J, Merr ett, N R and Phillips, S 1994b Mass mortality of common dolphins (Delphinus delphis) in south-west England due to incidental capture in fishing gear. Veterinary Record 134: 8189CrossRefGoogle ScholarPubMed
Lafontaine, L 1993 Distribution of Lutra lutra in Brittany and first preventive measures against road traffic. International Union for the Conservation of Nature (IUCN) Otter Specialist Group Newsletter 8: 3739Google Scholar
Langbein, J and Putman, R J 1992 Behavioural responses of park red and fallow deer to disturbance and effects on population performance. Animal Welfare 1:19-38CrossRefGoogle Scholar
Lipscomb, T P, Harris, R K, Moeller, R B, Pletcher, J M, Haebler, R J and Ballachey, B E 1991 Lesions associated with acute crude oil exposure in sea otters. In: Junge R E (ed) Proceedings of the American Association of Zoo Veterinarians ρ 276. American Association of Zoo Veterinarians: Philadelphia, USAGoogle Scholar
Lumeij, J T 1985 Clinicopathologic aspects of lead poisoning in birds: a review. The Veterinary Quarterly 7: 133138CrossRefGoogle ScholarPubMed
Lumeij, J T and Scholten, H 1989 A comparison of two methods to establish the prevalence of lead shot ingestion in mallards (Anas platyrhynchos) from the Netherlands. Journal of Wildlife Diseases 25: 297299CrossRefGoogle ScholarPubMed
McCaffery, K R 1984 On “crippling” semantics. Wildlife Society Bulletin 13: 360361Google Scholar
Madsen, A B 1990 Oddere Lutra lutra og trafik. Flora og Fauna 96: 3946Google Scholar
May, R M 1988 Control of feline delinquency. Nature 332: 392393CrossRefGoogle Scholar
Meehan, A P 1985 Humane control of rodents. In: Britt, D P (ed) Humane Control of Land Mammals and Birds pp 2836. Universities Federation for Animal Welfare: Potters Bar, UKGoogle Scholar
Meltofte, H 1978 Skudeffektivitet ved intensiv kystfuglejagt i Danmark. En pilotundersøgelse (Efficiency at intensive shooting along coasts in Denmark. A pilot survey). Dansk orn Foren Tidsskr 72: 217221Google Scholar
Mikula, E J 1977 A comparison of lead and steel shot for waterfowl hunting. Wildlife Society Bulletin 5(1): 38Google Scholar
Ministere de l’Agriculture 1992 Belgian National Reports on Derogations Under Article 9 of the Directive 79/409/EEC on the Conservation of Wild Birds. Bruxelles, BelgiumGoogle Scholar
Ministere de l’Environnement 1989,1990,1991,1992,1993 Derogations Enregistrees pour la France Under Article 9 EC Directive on Birds. Neuilly-sur-Seine, FranceGoogle Scholar
Moberg, G P 1985 Biological response to stress: key to assessment of well-being? In: Moberg G P (ed) Animal Stress pp 2749. American Physiological Society: Bethesda, USACrossRefGoogle Scholar
Monaghan, P 1992 Seabirds and sandeels: the conflict between exploitation and conservation in the northern North Sea. Biodiversity and Conservation 1: 98111CrossRefGoogle Scholar
Morehouse, K 1992 Crippling loss and shot-type: the United States experience. In: Pain D J (ed) Lead Poisoning in Waterfowl pp 32-37. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Morris, P A 1993 A Red Data Book for British Mammals. The Mammal Society: London, UKGoogle Scholar
Morris, P, Munn, S and Craig-Wood, S 1990 Released hedgehogs - can they cope? In: Thomas T (ed) Proceedings of the Third Symposium of the British Wildlife Rehabilitation Council. British Wildlife Rehabilitation Council: London, UKGoogle Scholar
Moser, M 1992 Conclusions. In: Pain D J (ed) Lead Poisoning in Waterfowl pp 95-99. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Mudge, G P 1983 The incidence and significance of ingested lead pellet poisoning in British wildfowl. Biological Conservation 27: 333372CrossRefGoogle Scholar
Mudge, G P 1992 Options for alleviating lead poisoning: a review and assessment of alternatives to the use of non-toxic shot. In: Pain D J (ed) Lead Poisoning in Waterfowl pp 23-25. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Neville, P 1985 Humane control of moles. In: Britt, D P (ed) Humane Control of Land Mammals and Birds pp 113117. Universities Federation for Animal Welfare: Potters Bar, UKGoogle Scholar
Newton, I, Wyllie, I and Asher, A 1992 Mortality from the pesticides aldrin and dieldrin in British sparrowhawks and kestrels. Ecotoxicology 1: 3144CrossRefGoogle ScholarPubMed
Noble, R E 1974 Reproductive Characteristics of the Mississippi White-Tailed Deer. Mississippi Game and Fish Commission Game Division: Jackson, USAGoogle Scholar
Northridge, S 1988 Marine Mammals and Fisheries: a Study of Conflicts with Fishing Gear in British Waters. Wildlife Link: London, UKGoogle Scholar
Northridge, S, Natale, A D, Kinze, C, Lankester, K, Zarate, V O de and Sequeira, M 1991 Gillnet Fisheries in the European Community. MRAG Ltd: London, UKGoogle Scholar
Oidén, B, Kollberg, B and Peterz, M 1986 Fisknätsdöden bland sjöfåglar i Nordväst-skåne vintern 1985/86. Anser 25: 245252Google Scholar
Pain, D J (ed) 1992 Lead Poisoning in Waterfowl. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Peeters, H 1991 Birds and oil pollution. In: Wild Bird Mortality in the Netherlands 1975-1989 pp 2330. Netherlands Society for the Protection of Birds and Central Veterinary Institute: Zeist and Lelystad, The NetherlandsGoogle Scholar
Potts, D 1990 Introduction to research articles. In: The Game Conservancy Review of 1990 pp 2931. The Game Conservancy: Fordingbridge, UKGoogle Scholar
Ramos, B 1992 Report for Spain. In: Pain D J (ed) Lead Poisoning in Waterfowl pp 93-94. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Rees, W A, Ross, J, Cowan, D P, Tittensor, A M and Trout, R C 1985 Humane control of rabbits. In: Britt, D P (ed) Humane Control of Land Mammals and Birds pp 96104. Universities Federation for Animal Welfare: Potters Bar, UKGoogle Scholar
Rehfisch, M, Warbrick, S, Clark, N A and Langston, R H W 1992 The Impact of the Severn Oil Spill of February 1991 on the Populations and Distributions of Waterfowl. British Trust for Ornithology (BTO) Research Report 81. BTO: Thetford, UKGoogle Scholar
Richards, C McDonald, D 1988 Pest control ‘88 - highly successful workshop toured Britain. International Pest Control 30: 9091Google Scholar
Richards, C G J 1989 The pest status of rodents in the United Kingdom. In: Putnam, R J (ed) Mammals as Pests pp 2133. Chapman & Hall: London, UKGoogle Scholar
Robins, M 1991 Synthetic Gill Nets and Seabirds. Royal Society for the Protection of Birds: Sandy and World Wide Fund for Nature: Godalming, UKGoogle Scholar
Rønholt, P G 1992 The lead/iron debate: the viewpoint of a Danish hunter and hunting organization. In: Pain D J (ed) Lead Poisoning of Waterfowl pp 78-80. Proceedings of International Waterfowl and Wildfowl Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Ross, J and Tittensor, A M 1986 Influence of myxomatosis in regulating rabbit numbers. Mammal Review 16: 163168CrossRefGoogle Scholar
Ross, J, Tittensor, A M, Fox, A P and Sanders, M F 1989 Myxomatosis in farmland rabbit populations in England and Wales. Epidemiology and Infection 103: 333357CrossRefGoogle ScholarPubMed
Rowan, A N 1988 Animal anxiety and animal suffering. Applied Animal Behaviour Science 20: 135142CrossRefGoogle Scholar
Sainsbury, A W, Bennett, P M and Kirkwood, J K 1993 Wildlife Welfare in Europe. European Commission Contract No B4-3060(92) 12596: Brussels, BelgiumGoogle Scholar
Sanderson, G C 1992 Lead poisoning mortality. In: Pain D P (ed) Lead Poisoning in Waterfowl pp 14-18. Proceedings of International Waterfowl and Wetlands Research Bureau Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Sandford, J, Ewbank, R, Molony, V, Tavernor, W D and Uvarov, O 1986 Guidelines for the recognition and assessment of pain in animals. Veterinary Record 118: 334338Google Scholar
Sears, J, Cooke, S W, Cooke, Z R and Heron, T J 1989 A method for the treatment of lead poisoning in the mute swan Cygnus olor, and its long-term success. British Veterinary Journal 145(6): 586595CrossRefGoogle ScholarPubMed
Shedden, C B 1992 The British hunters perspective on lead and steel shot. In: Pain D J (ed) Lead Poisoning in Waterfowl pp 81-85. Proceedings of International Waterfowl and Wetlands Research Bureau (IWRB) Workshop, Brussels, Belgium. Special Publication 16. IWRB: Slimbridge, UKGoogle Scholar
Smith, R I and Roster, T 1980 Steel vs Lead: Results from the Latest Test. US Department of the Interior, Fish and Wildlife Service Fact Sheet: Washington DC, USAGoogle Scholar
Stocker, L and Lewis, J C M 1993 Orthopaedic surgery in wild animals. Veterinary Record 133: 23Google Scholar
Stowe, T J 1982 Beached Bird Surveys and Surveillance of Cliff-Breeding Seabirds. Royal Society for the Protection of Birds: Sandy, UKGoogle Scholar
Strann, K-B, Vader, W and Barrett, R 1990 Auk mortality in fishing nets in north Norway. Seabird 13: 2229Google Scholar
Striese, M and Schreyer, R M 1993 Fischotter an Straßen - zur passage von brücken. In: Stubbe, M, Heidecke, D and Stubbe, A (eds) Monitoring Fischotter 1985-1991 - Tiere im Konflikt 1 pp 6167. Martin-Luther-Universität: Halle-Wittenberg, GermanyGoogle Scholar
Swart R de, L, Ross, P S, Vedder, L J, Timmerman, H H, Heisterkamp, S, Van Loveren, H, Vos, J G, Reijnders, P J H and Osterhaus, A D M E 1994 Impairment of immune function in harbor seals (Phoca vitulina) feeding on fish from polluted waters. Ambio 23: 155159Google Scholar
Thomas, D 1992 Marine Wildlife and Net Fisheries around Wales. Royal Society for the Protection of Birds: Sandy, UKGoogle Scholar
Tittensor, A M 1981 Rabbit population trends in southern England. In: Myers, K and McInness, C D (eds) Proceedings of the World Lagomorph Conference, Ontario, University of Guelph pp 629632. University of Guelph: Guelph, CanadaGoogle Scholar
Trout, RC, Ross, J, Tittensor, A M and Fox, A P 1992 The effect on a British wild rabbit population (Oryctolagus cuniculus) of manipulating myxomatosis. Journal of Applied Ecology 29: 679686CrossRefGoogle Scholar
Underwood, L A and Stowe, T J 1984 Massive wreck of seabirds in eastern Britain, 1983. Bird Study 31: 7988CrossRefGoogle Scholar
van Dyke, F 1981 Mortality in crippled mallards. Journal of Wildlife Management 45(2): 444453CrossRefGoogle Scholar
Wartzok, D 1991 Physiology of behaviour in pinnipeds. In: Renouf, D (ed) The Behaviour of Pinnipeds pp 236299. Chapman & Hall: London, UKCrossRefGoogle Scholar
Wood, A M, Munro, R and Robinson, I 1993 Oiled birds from Shetland, January 1993. Veterinary Record 132: 367CrossRefGoogle ScholarPubMed
Woodford, M H 1993 International disease implications for wildlife translocation. Journal of Zoo and Wildlife Medicine 24: 265270Google Scholar
Yalden, D W 1992 The influence of recreational disturbance on common sandpipers Actitis hypoleucos breeding by an upland reservoir, in England. Biological Conservation 61: 4149CrossRefGoogle Scholar
Yalden, P E and Yalden, D W 1990 Recreational disturbance of breeding golden plovers Pluvialis apricarius. Biological Conservation 51: 243262CrossRefGoogle Scholar