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where else would the lead come from? Seems logical that decades of shooting leadshot into rivers, lakes and fields would be the source. Maybe I am missing something???
Those birds have high levels of more than just lead. Usually they have lead, cadmium and mercury. I don't know of bullets using cadmium, and doubt anyone is using rounds with mercury (especially for hunting--been illegal for a while). About the only place I can think of (sure someone on here might know of others) where the three seem to exist is smoke from coal plants. Maybe the birds like to fly in the smoke or something.
Let's think about this. How much of a deer or elk gut pile will a bird of prey actually consume? How about the wolves, cougar, bear, coyotes, etc. If a bird of prey does eat some of a gut pile, what are the chances they will eat that one piece of meat that might have a piece of metallic lead in it? If they do get a tiny piece of metallic lead, just how bioavailable and soluble is it and will it cause lead poising and/or high blood-lead levels? Let's not let Washington follow the path of the California anti-gun, anti-hunting, and animal-rights extremists. This is not to question the scientific ability of WDFW biologists; it is about how information has been presented that appears questionable and seems to direct people toward an agenda of banning traditional ammunition just as it was done in California.
Higher lead levels in the environment are not at all cause by ammunition.Sure, some very specific localized examples exist... ie, dirt taken from an actual shooting range....Where the lead comes from... is humans.We are a wasteful dirty species.Lead levels at any landfill are thousands of times higher than their surround natural environments.We flush stuff down our toilets, throw garbage away, and drive vehicles every where.If people were legitimately concerned about lead pollution, we should outlaw chemicals... not bullets.Bullet lead, consists of a mere fraction of a percentage of what all the lead in this country is used for.We ship billions of tons of lead from china every year.... you know how much actually goes into making bullets?less than 1% of 1% of 1%....... that's <0.0001%Where is the rest of the lead going??? hmmm.....
"Bans on lead ammunition are misguided and ineffective ..."http://www.oregonlive.com/opinion/index.ssf/2014/07/bans_on_lead_ammunition_are_mi.html