What is the magnitude of the group-size effect on vigilance?

228 citations recorded by the source corpus.

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

Flock size and human disturbance affect vigilance of endangered red-crowned cranes (Grus japonensis) (2011, result): “All three measures of vigilance, namely time spent vigilant, scan duration and scan frequency, declined with group size, thus corroborating findings from a large number of studies in birds and mammals (Elgar, 1989; Caro, 2005; Beauchamp, 2008).”
Psittacine reintroductions: Common denominators of success (2012, background): “Moreover, the establishment and maintenance of a resident flock may also promote higher long-term survival via increased antipredator vigilance (Westcott and Cockburn, 1988; Brightsmith et al., 2005; Caro, 2005; Beauchamp, 2008).”