Typical or booted eagles range in size and shape from small hawk-eagles to large soaring eagles.
Serpent or snake-eagles mainly eat reptiles and carrion. The lower legs are covered by armor-like scales that help protect against snakebites.
Forest eagles live in tropical rainforests, and include some of the largest and most powerful eagles. Their lower legs are not feathered.
Sea or fish-eagles are large, powerful, long-winged eagles. These eagles do not have feathers on their lower legs. They have rough surfaces on the pads of their feet for holding slippery fish.