They don't live in North America. They live in southeastern Mexico, northern Argentina and southern Brazil.
The females are bigger than the males. They have a 6 1/2 foot wing span. A wing span is how long the wings are when they're stretched out both ways. They weigh between 10 and 20 pounds.
They strike their prey after pursuit among the trees. They eat sloths, monkeys, opossum and some reptiles and birds. They have rear facing talons with some as big as a grizzly bear's claw BUT the Harpy Eagle can only carry prey that is half of its weight.
They are endangered. The biggest threat is habitat loss and hunting.
Here are two pictures of Harpy Eagles.