Social and ecological factors influencing vigilance by northwestern crows, Corvus caurinus

On the advantages of flocking

H. Ronald Pulliam · Journal of Theoretical Biology · 1973 · 1.3K citations

Agriculture, Poultry Science, Collective Behavior +6

Why individual vigilance declines as group size increases

Gilbert Roberts · Animal Behaviour · 1996 · 912 citations

Management, Behavioral Sciences, Psychology +11

Producers and scroungers: A general model and its application to captive flocks of house sparrows

C. J. Barnard, Richard M. Sibly · Animal Behaviour · 1981 · 765 citations

Life Sciences, Ecology, Zoology +13

Back to the basics of anti-predatory vigilance: the group-size effect

Steven L. Lima · Animal Behaviour · 1995 · 701 citations

Life Sciences, Ecology, Psychology +14

Predation Risk and Unpredictable Feeding Conditions: Determinants of Body Mass in Birds

Steven L. Lima · Ecology · 1986 · 695 citations

Life Sciences, Animal Sciences, Ecology +14