If you have time. The pro leaded will like his conclusion, though he does gloss over a point or two in order to strengthen his position, it is still a good summary. It is a bit long, but probably more useful than just posting links to studies as he covers the studies, and discusses things that should be considered in the studies.
Find out if bird biologists' concerns about the effects of lead in venison on human health are legitimate or just an effort to save birds.
www.deeranddeerhunting.com
If the deer and elk were lost, how do you know it was bad bullet performance and not bad shot placement?
This is my primary concern. Personally, I'm here for a good time not for a long time. There's plenty of places where lead ammo probably has a negligible effect on bird populations. However, when we look at all the threats to raptors like habitat loss, wind farms, prey species decline, etc. it's pretty easy for me to get behind a good mono bullet that's lethal at every range I'm comfortable shooting at and that won't impact the pair of golden eagles I see every day.
Yeah, the other things might be bigger problems but I like seeing eagles, hawks and falcons when I'm out hunting and fishing and am happy to have an impact on the problem that I'm capable of helping. Especially because my family hunts the same area and usually leaves over a dozen carcasses out on the same 8k acres.
And some of you might not love this argument, but it's pretty clear that the more hunters who voluntarily start hunting with nonlead ammo, the longer we'll go without government regulation, which might impact target shooting too.
It would make more sense to archery hunt