n addition to the red shoulder patch, male redwing blackbirds also sing to defen

Question

n addition to the red shoulder patch, male redwing blackbirds also sing to defend their territories from other males. If the size of the shoulder patch is important, which of the following is most likely to be true?

A.Shoulder patch size and song duration will be negatively correlated.

BShoulder patch size and song duration will be positively correlated.

C.Shoulder patch size and song duration will be uncorrelated.

D.Shoulder patch size and song duration will be positively correlated only if the male has a territory.

Explanation / Answer

D.Shoulder patch size and song duration will be positively correlated only if the male has a territory.

In addition to the red shoulder patch, male redwing blackbirds also sing to defend their territories from other males, shoulder patch size and song duration will be positively correlated, which indicates territory defence.

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