Behavior
The golden-crowned sifaka is primarily active during the day (diurnal), but researchers have witnessed activity in the early morning and evening (crepuscular) during the rainy season (November through April). In captivity, it has been observed feeding at night, unlike captive Verreaux's sifakas. It travels between 461.7 and 1,077 m (1,515 and 3,530 ft) per day, an intermediate range compared to other sifakas of the eastern forests. The golden-crowned sifaka can be observed feeding and resting higher in the canopy during the dry season (May through October). It sleeps in the taller trees (the emergent layer) of the forest at night.
When stressed, the golden-crowned sifaka emits grunting vocalizations as well as repeated "churrs" that escalate into a high-amplitude "whinney." Its ground predator alarm call, which sounds like "shē-fäk", closely resembles that of Verreaux's sifaka. It also emits mobbing alarm calls in response to birds of prey.
Read more about this topic: Golden-crowned Sifaka
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