Complex sentence: The Mountain finches are birds in the Finch family "Fringillidae" from the genus "Leucosticte", which also includes the Rosy-finches named for their pinkish plumage.
Split into simpler sentences: The Mountain finches are birds in the Finch family "Fringillidae" from the genus "Leucosticte". This genus also includes the Rosy-finches named for their pinkish plumage.