A dandy in a red cravat The majority of bird species live in trees, but many members of the subfamily Turdinae are active on the ground. Unable to fly far, they have a very small range, and due to long periods of isolation without genetic exchange they have evolved into endemic species in many areas.
有別於棲息樹上的多數鳥族，鶇亞科鳥類多在地面活動，飛行距離有限，活動範圍狹窄，在長久隔離下，基因疏於交流，各地紛紛演化出特有種。