Behavioral drive or behavioral inhibition in evolution: subspecific diversification in Holarctic passerines.

Abstract excerpt

Behavioral changes have long been hypothesized to be an important driver of evolutionary diversification in animals, as they expose individuals to new environmental pressures and thus favor evolutionary divergence. There have been few empirical tests of this hypothesis, however, and the mechanisms linking behavioral changes and diversification processes remain controversial. We show here that Holarctic passerines...

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