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Abstract. Many mammals warn conspecifics with alarm calls about detected predators. These alarm calls are either functionally referential, urgency based, or they can have multiple functions, including predator deterrence. The taxonomic distribution of these alarm call systems is uneven, with primates providing the best-known examples for a functionally referential system and rodents most examples...
Abstract. Intraspecific flock-feeding occurs in many species of birds but the ecological factors that promote the behavior are not clear. Adaptive hypotheses suggest that such flocking should be more likely in species that are vulnerable to predation due to their smaller size, their preference for more open habitats or their more active foraging mode. In addition, flocking is also thought to be promoted...
Abstract. Predation is often considered an important factor in the evolution of sociality among animals. We studied mortality patterns and grouping behavior of white-nosed coatis (Nasua narica) at sites in southern Arizona, USA, and western Jalisco, Mxico. Coatis were monitored by radio-tracking and recaptures for more than 3years at each site. In both populations, predation by large felids, including...
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