[va-bird] Red-winged Blackbird v. Tricolored Blackbird

Folks-
   I just got a call from a California birder who was rather convinced she 
had a Tricolored Blackbird nesting near a pond in Yorktown. So, I told her 
to try and get a picture, but that it would be unlikely (to say the 
least?). In the meantime, I was just curious how much overlap in color 
there would be with these two species, not having seen a real live 
Tricolored before. It looked from the books and photos that a little 
genetic jiggery-pokery could make 'em look a lot alike.

Thanks
Dave Hewitt
Gloucester, VA

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