The giant crow

Description: In my area there is a giant crow. The common crows are 66 - 69 cm in length and they have 1.03 cm wingspan. But this one is little bigger with wingspan close to 1.70 cm and length close to 80 cm. 
Area: The giant crow lives in Greece in area of Loutraki.
Behavior: The giant crow is acting like any other common crow.
Possible explanation: A common raven ( wingspan 1,50 cm and length 73 cm ). 
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