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palm crow
The palm crow (''Corvus palmarum'') is a relatively small black bird in the crow family that occurs mostly on the large Caribbean island of Hispaniola, itself divided into the two countries of Dominican Republic and Haiti. It was formerly quite frequent on Cuba but has become severely reduced in number and may be almost extinct there. This form is slightly smaller and is usually separated as a sub-species called ''Corvus palmarum minutus''. Both forms are usually now given the respective common names of Hispaniolan palm crow and Cuban palm crow to distinguish them.
Both forms appear to be closely related to the fish crow (''C. ossifragus'') of the East Coast of the United States and also two smaller species, the Tamaulipas crow (''C. imparatus'') and Sinaloan crow (''C. sinaloae'') of Mexico and forms a species group with them.
The Dominican local name for the palm crow is ''cao'', which is onomatopoeic of the simple and repetitive call of this bird. There it is locally common, mainly in mountain pine forests and also around the area of Lake Enriquillo.
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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