Thread: Whats your solutions to the duck decline?

Out of interest, how long has the lead ban been in place for 12 gauge and what would be an average age for a mallard? If the lead was causing the earlier demise of mallards should they have had enough time to get the lead out of their systems (ie a generation or two with 95% lead reduction)? If this is the case and the numbers are still not increasing then that points to something other than lead shot being the issue and research needed to find out what are the real issues.