Observed at 3:30pm April 17 at the Lyon County Fairgrounds along the
Redwood River. This bird is the size, shape, and stature of a Northern
Goshawk, but this bird was very dark in general color both above and
below. I am not aware of color morphs in accipiters. Any guidance would
be appreciated.

Photos and written details are available at the following link.

http://singingwings.rohair.com/index.php?option=com_content&view=article&id=153:mystery-hawk&catid=37:benefits&Itemid=55

Sincerely,
Roger Schroeder