Grouping increases the ability of the social rodent, Octodon degus, to detect predators when using exposed microhabitats

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Sociality in New World hystricognath rodents is linked to predators and burrow digging (2006, background): “…and invertebrates generally supports the hypothesis that individuals in larger groups increase collective vigilance and predator detection (e.g., Ebensperger and Wallem, 2002; Hoogland, 1981; Kenward, 1978; Uetz et al., 2002), dilute their per capita risk (e.g., Krause and Godin, 1995; Watt and…”
Fitness consequences of group living in the degu Octodon degus, a plural breeder rodent with communal care (2009, background): “Degus in larger groups respond more quickly to approaching terrestrial predators because of the many eyes effect (Ebensperger & Wallem 2002).”
Vigilance and Collective Detection of Predators in Degus (Octodon degus) (2006, background): “…individuals in groups improve their ability to detect and escape potential predators (Lima 1995a), a prediction supported in some birds (Powell 1974; Siegfried & Underhill 1975; Kenward 1978; Lazarus 1979; Møller 1987; Boland 2003) and a few small mammals (Hoogland 1981; Ebensperger & Wallem 2002).”