Harpy Eagles Hunt Monkeys in Amazon

Biologist Perri Eason first documented a harpy eagle attacking an adult howler monkey in 1989. These eagles, with wingspans exceeding two meters, inhabit the dense rainforests stretching from Mexico to the Amazon Basin in South America. Unlike eagles that soar, harpies navigate tangled branches with broad wings and long tails for agility.

Female harpies weigh up to 9 kilograms and possess the largest talons of any living eagle—reaching 12 centimeters—to secure struggling prey. They ambush mammals high in the canopy, using powerful legs and talons to immobilize animals with concentrated gripping force. Researchers recently confirmed this hunting style by analyzing skeletal damage on prey remains.

While sloths also comprise a significant part of their diet, primates offer a substantial energetic reward, despite the risk of bites and alarm calls. Harpy eagles require vast, intact rainforests to thrive, but habitat loss through logging and agriculture currently threatens their populations. The species’ specialized adaptations limit its ability to survive in fragmented landscapes, meaning conservation efforts remain crucial for its survival.