Emberizoidea is a superfamily of passerines that are referred to as the New World nine-primaried oscines that includes majority of endemics which are exclusive to the New World. Nearly 892 species belong to this group as it includes buntings, American sparrows, the New World blackbirds, the parulid warblers, the cardinals, and the tanagers. The group originated after a rapid speciation event in North America after arriving from Eurasia via Bering strait during the Miocene epoch. Two groups from within the emberizoids diversified further in the Neotropics where one clade comprising several small Caribbean endemic species and the other, the tanager-cardinal group, in South America. Another two families, the Emberizidae (buntings) and the Calcariidae (longspurs and snow buntings), return to Eurasia and colonized.[1]
鹀總科為雀形目下的一個(gè)總科，也被稱為9初級(jí)飛羽鳴禽（翅膀上有9根初級(jí)飛羽，而一般雀形目都有10根），涵蓋了新大陸（指美洲）土著鳥類的絕大多數(shù)物種。目前該總科包含892個(gè)物種，包括鹀，雀鹀（英文里字面意思是美洲麻雀），擬鸝（這里用的英文是新大陸鶇），森鶯，北美紅雀（主教鳥）以及裸鼻雀。從歐亞地區(qū)經(jīng)由白令海峽潤(rùn)到北美后，這個(gè)總科的初期類群在中新世經(jīng)歷了一個(gè)迅速的種群分化事件。其中的兩個(gè)鹀形類群在新熱帶界（指美洲的高緯度地帶）進(jìn)一步分化，一個(gè)類群包含了加勒比的土著鳥類，另一個(gè)類群則是南美洲的北美紅雀-裸鼻雀類群。另外兩個(gè)科，即鹀科和鐵爪鹀科，則反向潤(rùn)回了歐亞老家并定居化。

那么反向潤(rùn)的下場(chǎng)是什么呢？

而潤(rùn)能讓你獲得什么呢？