During his voyage, Darwin went to Galapago islands and observed and amazing diversity of particularly, some black birds, called Finches. Darwin's Finches represent a best example for an evolutionary phenomenon.
In which feature, they show diversity?

During his voyage, Darwin went to Galapago islands and observed and amazing diversity of particularly, some black birds, called Finches. Darwin's Finches represent a best example for an evolutionary phenomenon. Name the phenomenon.

During his voyage, Darwin went to Galapago islands and observed and amazing diversity of particularly, some black birds, called Finches. Darwin's Finches represent a best example for an evolutionary phenomenon. Give another example for this phenomena.