THOMSON – Staff at Upper Mississippi River National Wildlife and Fish Refuge encourage hunters to use copper and other lead-free ammunition and help protect bald eagles.
According to a news release, biologists at the site investigated the deaths of 58 bald eagles. Some of the dead birds had eaten lead in amounts many times above the clinical lethal level. Lead can cause muscle paralysis, blindness, and inability to fly in eagles.
Further research found eagles often ate ammunition fragments containing lead from piles of deer remains left behind by hunters. Copper ammunition will expand, rather than fragment, upon impact, Britton wrote.
Call the refuge at 815-273-2732, ext. 111, for more information.