The most relevant of which is:Mudge G P (1983), "The incidence and significance of ingested lead pellet poisoning in British Wildfowl", Biological Conservation, 27, pp. 33-372.Other studies include:Beck N and Ganval, P (1987), "Ingestion de plombs de chasse par la Becassine des marais Gallinago gallinago et la Becassine sourde Lymnocryest minimus dans le Lord-ouest de la France", Gibier Faune Sauvage/Game Wildlife: In press.Bellorse F C (1959), "Lead poisoning as a mortality factor in waterfowl populations III", Natural History Survey Bulletin, 27(3), pp. 235-288.Bowler, J M and Hugest B, (1997) Biological monitoring of lead shot replacement in the UK, final report of pilot study, unpublished, Wetlands Advisory Service report to DoE, WWT, Slimbridge (in prep).Degtyarev A G (1996), Incident of lead shot ingestion in waterfowl and cranes of Yakutia, Ibid., pp. 25-27.Grand J B, Flint P L, Petersen M R and Moran C L (1998), "Effect of lead poisoning on spectacled elder survival rates", Journal of Wildlife Management, 62(3), pp. 1103-1109.Hohman W L, Pritchert R D, Pacell R M, Woolington D W and Helm R (1990), "Influence of ingested lead on body mass of wintering canvasbacks", Journal of Wildlife Management, 54(2), pp. 211-215.Mateo R, Martinez-Vilalta A, Dolz J C, Bellure J, Serrano J M A, Guitart R (1994), "Estudio de la problematica del plumbismo en aves acuticas de diferentes humedales espanoles", ICON, pp. 196.Mateo R, Bellure Jm, Dolz J C, Agullar J M and Guitart R (1997), "An peizotic of lead poisoning in greater flamingos.