The species “is undergoing a dramatic expansion of its breeding range in North America,” the study published in the journal Ontario Birds said. Adults have no major predators, although bald eagles sometimes kill young pelicans, Weseloh said. Both are west of Pelee Island, the lake’s largest island a popular tourism spot. As for further territorial expansion, the study says it is “perhaps only a matter of time” before American white pelicans start nesting in Lake Ontario and Lake Huron. Lake Ontario also has islands suitable for nest, along with ample food supplies.