Subfamily BUCORVINyE 



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Bill long, powerful, curved, terminating in a sharp point. Casque high, and, with the 

 exception of one species, open in front. Skin around eyes, on sides of neck, throat, and gular 

 pouch naked. Wings reaching one third the length of the tail. Legs long, fitted for walking 

 on the ground, upon which the species pass nearly all their time. Toes short and stout. 

 The semitendinous and accessory semitendinous muscles of the thigh are represented ; but the 

 ambiens, femoro -caudal, and the accessory femoro-caudal are absent. The species are essentially 

 birds which live upon the ground. 



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