Why is lead shot not permitted for hunting waterfowl in North America?

Lead shot is not permitted for hunting waterfowl in North America primarily due to its potential to cause lead poisoning in birds and other wildlife. When lead shot is used, spent pellets can remain in wetlands or agricultural fields, where they may be ingested by waterfowl, especially during foraging. This ingestion of lead can result in severe health issues, including neurological damage and death.

Over time, this concern led to regulations that prohibit lead shot for waterfowl hunting as a means to protect bird populations and maintain healthier ecosystems. This decision is supported by scientific research that highlights the detrimental effects of lead exposure on both individual birds and broader wildlife populations. Therefore, the move to ban lead shot is an important management strategy aimed at conserving waterfowl and ensuring the safety of the environments in which they live.