You are considering t"oo optimal foraging models for the

Chapter 0, Problem 8

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You are considering t"oo optimal foraging models for the behavior of a mussel-feeding shorebird, the oystercatcher. In model A, the energetic reward increases solely with mussel size. In lllodel B, you take into consideration that larger mussels are more difficult to open. Draw a graph ofreward (energy benefit on a scale of0-10) versus mussel length (scale of0-70 mm) for each model. Assume that mussels under 10 mm provide no benefit and are ignored by the birds. Also assume that mussels start becoming difficult to open when they reach 40 mOl in length and impossible to open when 70 mm long. Considering the graphs you have drawn, how could you distinguish between the models by o