Eagles' homes are typically referred to as nests or AERIES. Nests are structures built by the birds themselves, usually made of sticks and other materials found in the environment. AERIES are large, open-air structures built on cliffs or other high places, often used for nesting and roosting. Eagles are known to build their nests in tall trees, on cliff faces, or even on the ground. They may also use abandoned nests of other birds or animals.