Osprey, sometimes referred to as "fish hawks" or "fish eagles," are one of the largest birds of prey in North America and are often mistaken for Bald Eagles. Their backs and wings are dark brown while their bellies and chests are white. They have a white head and crown with a dark horizontal eye patch. Osprey, usually monogamous, often return to the same nest or the same nesting area year after year. Ospreys soar above water and dive feet first after fish. Ospreys feed almost exclusively on fish. Ospreys live and nest near bodies of water that support fish. Four subspecies of Ospreys are found on every continent except Antarctica.