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White-faced sakis (Pithecia pithecia) are Neotropical seed predators that ingest a mixed diet of fruit, leaves, and insects. We report timed feeding data for a 12-mo period on a group of 8 white-faced sakis occupying an island--a portion of their original home range--in Lago Guri, Venezuela. We collected fruit and leaf samples, dried them in the field, and analyzed them to...