Excellent article and thanks for posting it, Salient points ... the legs of the featured bird are steel, or lead gray much like a Bay-breasted and unlike a Blackpoll. Yet, there is no ruddy, rusty blush ... anywhere. Unlike a Bay-breasted. The streaking on the back is hard to assess without more detail (resolution). The deck is wet and so is the bird and that might create an illusion of streaking. I would like to revisit this after I've had a coffee and when my duties are not jabbing me in the side ... nudge, nudge.