I used to shoot gophers on a friends place and the only caveat was to pick them up and take them to another mutual friend who rehabilitated raptors for food. Never poisoned any of his birds...
Actually that is one of the points in the article, that the lead fragments might stunt thier growth but probably wouldn't kill them. Considering the source is from an Oregon university, I was amazed that is was actually a pretty well reasoned article.
