A critical analysis of the titration procedure introduced by Abrahams and Dill (1989).

In this article the authors discuss the analysis of M.V. Abrahams and L.M. Dill on titration process and energetic equivalence of risk predation. They said that a common currency with reproductive success is needed to identify the relationship of energetic gain and risk of predation. They cited that the analysis uses the ideal free distribution (IFD) for the separation of a group of animals into two patches. They added that energetic equivalence as an important factor in rating the patches.