Harpy Eagles usually lay a clutch of two eggs, and although both may hatch, usually only one chick survives to fledge. Once fledged, the juvenile may stay with its parents for a period of up to two or three years while it learns to hunt and care for itself. Once the young becomes independent and starts looking for its own mate and territory the adults are able to attempt breeding again. This long interval between breeding attempts and resulting slow rate of reproduction makes the species extremely vulnerable to direct human impact, such as persecution (shooting and trapping), long before deforestation destroys their habitat.
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