Birds habitat beaches, like gulls, loons, sandpipers, terns and pelicans. Near the shoreline, gulls, herons, geese, and loons are common. Canada geese, loons, mallards and seagulls are a common sight. Winter residents include northern gannets, American white pelicans and common loons. Adult common loons have few predators, although bald eagles will attack incubating birds. Most birds, except loons and grebes, are digitigrade, not plantigrade. Migrating birds that stop over on the island include hawks, harriers, eagles, and black-throated loons. This even went as far as proposing monophyly for grebes, loons, and the toothed Hesperornithiformes. Penguins, loons, and puffins are without pneumatized bones entirely. Unfortunately, confusion about whether Linnaeus' "wastebin genus" "Colymbus" referred to loons or grebes abounded. Numerous birds nest on the steep cliffs, particularly loons. For protection from predators, common loons favour lakes with islands and coves. Another large water bird taken as adults are common loons ("Gavia immer"). Mr. Lawrence, who voiced Filburt, voices Edward and the Loons. All species of loons have a spear-shaped bill.