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...