Adaptation is evolution in response to natural selection. Hence, an adaptation is expected to originate simultaneously with the acquisition of a particular selective environment. Here we test whether ...

Phenotypic characters with a complex physical basis may have a correspondingly complex evolutionary history. Males in the “bee” hummingbird clade court females with sound from tail-feathers, which ...

Sometimes a picture can tell you a lot about evolution. This particular picture has a story to tell about how two species–in this case a fly and an orchid–can influence each other’s evolution. But the ...