Greenland Redpoll ?

A few more pics of the large dark Redpoll I caught on March 5th (see posts below).

Research suggests this bird really could be a rostrata Greenland Redpoll, it has many of the id features and is very similar to birds photographed in the USA and Northern Isles. One interesting documented feature is the fact that Greenland Redpolls have dark spurs projecting in to their white wing bars - just like this bird (top pic).