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Hi Tony - I agree with your ID of vicina, but the top image does not look like vomitoria to me (not enough orange hair on the cheeks). There are several other species of Calliphora in your region, and this is probably one of them.

Terry Whitworth has produced a key to the North American Calliphoridae - you can download it from http://www.birdbl...worth.html (Whitworth, Terry L. 2006)