雀形目(Passeriformes)霸科(Tyrannidae)6种中美和南美鸟类，喙极宽而扁。分为扁嘴霸鹟(Rhynchocyclus)和扁嘴雀(Ramphotrigon)两属。均为橄榄色，上部有灰、褐或黑色斑纹，下部有黄色或淡褐色斑。体长15∼17公分(6∼7)。

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