Quite the opposite here. I'm 88 and have mostly hunted diving ducks ducks over water since 1949. It was not uncommon to see ducks with green around the belly and vent that we were told later was an inedicator of lead poisoning. And yes they were lightweight and emaciated like the Ducks Unlimited article claimed. Since I began replacing my beloved lead 5's with steel 3's in the mid-80's, I can't recall seeing a 'green duck". That could possibly occur because we shot quite a few dabbling ducks when we were young. They feed close to shore in the shallowest water. I read about the forced ingestion experiments. I saw lead salts replaced by titanium salts in white paints. Then I read aout how swans had returned to the Thames after lead fishing sinkers were banned. So I bit the bullet and retired my percussion doubles. Sad, but if I erred it was on the side of wildlife, so that takes some of the sting out of it for me.