Current issues of journals in animal behavior and ecology provide many examples of the effects of danger on foraging. Two wide-ranging reviews summarize older examples (Lima and Dill 1990; Lima 1998). Two excellent books give details about the interplay between foraging and danger in groups (Giraldeau and Caraco 2000; Krause and Ruxton 2002). Cuthill and Houston (1997) investigate issues related to state dependence in greater detail. For anyone who wants to pursue the theory more deeply, I recommend one review (Houston et al. 1993) and two books (Clark and Mangel 2000; Houston and McNamara 1999).
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