Samples sent to an animal diagnostic lab for analysis after the bird died revealed that very high levels of lead poisoning caused the eagle’s death, according to a post on the Bay Beach Wildlife Sanctuary Facebook page. The levels of lead found in the eagle were many times higher than the normal amount that an eagle can live with, according to the sanctuary. Despite receiving care overnight in February at Bay Beach Wildlife Sanctuary in Green Bay, the eagle died after being discovered by a neighbor in the Kaukauna park.