terrain and forest damage.
Hunting also leads to effects on 'non-target' species. Lead poisoning of waterfowl through ingestion of lead shot is a phenomenon which has been recorded in at least 20 countries, and is now being investigated in depth in Europe. Shot ingestion levels show evidence of increasing over time as the density of available shot in wetlands increases. This is leading to increased bird mortality, a cause of some concern in many countries (Pain, 1992). There is also some evidence in the UK that lead weights used in recreational fishing are being ingested by waterfowl such as swans.