In any case after looking at the images of the so-called Green-Morph siskin on the Internet I think the bird that has been coming here all winter fits into that group just fine as an example of a very average green-morph Pine Siskin.
These last two images come from Pat Folsom,(thanks Pat) who email me after last nights post to VT bird, wondering if my green siskin looks anything like the one she photographed back in March in her yard. These are great images Pat and show a very good example of how strong the color can be in some birds and really show how much the green morph can very from bird to bird.
I googled “green-morph pine siskin” and found more helpful information on the Zen Birdfeeder
, she had some good links to photos and other reports of the green morph siskin. If you are still curious check Boreal Birds I found this blog to be very informative and well written.