Animals can evolve separately but end up evolving toward other species, too, or even spontaneously evolve the same characteristics in totally separate groups. Birds and bats can both fly using ...

A recent series of studies suggests that the brains of birds, reptiles and mammals all evolved independently — even though they share a common ancestor. This process, where different species ...

A new study examining stick and leaf insect species has found evidence of convergent evolution, with all of the insects evolving similar characteristics despite diverging long ago. The rest of this ...