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female Sword-billed Hummingbird, Papallacta, Ecuador


Population Differentiation
& Speciation

Speciation is perhaps the single most important process generating biodiversity, but it is difficult to study, typically occurring over tens of thousands to millions of years and involving the divergence of widely disjunct populations.  

We are interested in how populations diverge from each other, when reproductive isolation evolves among populations, and how interactions among closely related species impacts the evolution of reproductive isolating traits, like song and colour pattern.


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