The initial assessment of Brewer's Blackbird for this bird was the correct one. Grackles not only have longer tails than blackbirds, but also have a shorter primary projection which adds to the elongated rear-end gestalt of the bird. Plumage-wise, the head, neck and chest of a Common Grackle shows a demarcated line of iridescence separating the back and belly from these regions. This can be seen in both subspecies (i.e. color forms) of the Common Grackle. It should be noted also, that the most common form to "vagrate" to Oregon is the "bronzed" Common Grackle. Good birding,Russ NamitzMedford, OR