[obol] mystery bird

[Ann Chamberlain]

When I got up this morning, the usual large number of black-headed 
grosbeaks were all over the feeder and the sunflower feeder.

Included was a completely black bird with one large white wing bar, same 
shape and size as the grosbeaks.

I went to get the glasses and got one brief look before the bird flew.  
Watched for a long time and it returned once but flew as soon as I 
picked up the glasses.

Thoughts?

Ann outside Myrtle Creek