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The threat posed could soon be similar to that facing the harpy’s near relative, the Philippines monkey-eating eagle. 44) .
Like this Filipino cousin, the harpy eagle nests in the tops of the largest forest trees. It therefore needs an intact forest to breed. The seemingly invincible harpy is vulnerable for another reason. A mating pair is thought to produce only one eagle every two years. Harpy eggs take up to 60 days to hatch and chicks take a further 60days before they learn to fly. What is more, the youngster is fed by the parents for many moths after it has learned to fly. Annual breeding then is impossible.
[A] This acutely threatened bird was reduced in numbers to fewer than 100 in the wild by the loss of its forest habitat and by the heavy demands of trophy hunters in the Philippines.
[B] But it has been seen carrying monkeys, sloth and even small deer back to its nest.
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