In Testing a Hypothesis That "Territorial Defense in European Robins

question 45

Multiple Choice

In testing a hypothesis that "territorial defense in European robins is a fixed action pattern that is released by the sight of orange feathers," researchers found that robins defended their territory by attacking anything that was of similar size and had an orange patch. What experiment would you perform next to determine that the color initiated the defense response?

• A) Repeat the experiment using a blue patch instead of an orange patch.
• B) Repeat the experiment by removing the patch completely.
• C) Repeat the experiment by using a model of a robin that was twice the size of a normal robin but with a small orange patch.
• D) Repeat the experiment by using a model of a robin that had an orange patch that was twice the size of a normal patch.

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