The term 'Fish-Eating Eagles' refers to the species of eagle known as Ernes, which are found in Europe, Asia, and North America. They are large birds of prey that feed mainly on fish, but also hunt small mammals and other birds. Ernes have a wingspan of up to 2.5 meters and can weigh up to 4 kilograms. They are powerful hunters and have been known to take down prey much larger than themselves. They are also highly intelligent and have been observed using tools to help them catch their prey.