While chatting on the phone and idly looking out the window, I noticed an odd Siskin with a small flock pecking around on the ground under the feeders. It looked positively lemony compared to the other hundred or so swirling around the yard. People have been reporting “green-morph” Pine Siskins here and there. I wonder if that is what I have. I looked in big Sibley and he calls it a “Yellow Adult.” Look at it on the bottom right of the feeder. It has more pronounced yellow on the wing and look at that butter butt! It’s undertail is a pale yellow too. Being only 1% of the population, I did not think I would see one. But, by Jove, I think I have one. What do you think? Have you ever seen one?
Stumble It!
Behind the Bins 
Well, now that you mention it, I have seen a lemony siskin among the hundred+ that have been snorting our thistle seed. Will take a closer look now.
That’s a fun thing to point out. I haven’t been looking for these. Had fifty on feeders and the ground yesterday that blew in with the front. I like the nice look at the yellow in the wing feathers of the top one, too.
How exciting! Good catch on finding a unique siskin. Normally they’re not so easy to tell apart!