The Fazenda Boa Vista is located in a dry woodland habitat of Piauí, Brazil. The site (90 S, 450 W) is a plain edged by sandstone ridges and mesas rising approximately 20 m or more above the plain.
Aside from palms (Atalea spp., Astrocaryum sp., and other species), the habitat appears to offer scarce food resources for capuchin monkeys, especially in the dry season, and local people report that the monkeys crack open palm nuts throughout the year.
The size of the palm nuts varies according to the species: the largest (Atalea sp.) have an oval shape (5 cm diameter in width, and 6 cm diameter in length), the smallest (Astrocaryum sp.) are round and 2.5–3 cm in diameter. The fronds and fruit clusters of the palm species in this area emerge from the soil, rather than above ground.
