Squirrel cameo

“My Brother’s Keeper” by Kari Benson

Part III—Experimental Results

Not all squirrels call equally. Examine the following figures and then answer the question.

Graph depicting frequencies of first alarm callersGraph depicting frequencies of all alarm callers

Figures represent expected vs. observed frequencies of alarm calls across classes of Belding’s ground squirrels drawn from 102 interactions with predators. Adapted from Sherman 1977.

Question

  1. What conclusions can you draw from the data shown in the above figures?

Go to Part IV—“Sherman’s Conclusions”


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