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  • Ilkka

    on January 21, 2013

    Lots of Pine Grosbeaks also here in S Finland this winter. Great photos, Earl!

  • Shawn

    on January 20, 2013

    Interesting to the see the color variation side-by-side. My parents have hosted fairly large flocks of Pine Grosbeaks this winter and there has been one that is noticeably brighter red throughout than the other adult males. I know that Pine Grosbeaks can show coloration variance based on geography and feather wear, but I've also read that some fruit eating birds show individual color variation caused by the carotenoids in the fruits they eat. There have even been some experiments along these lines where birds were given diets of different foods and developed somewhat different plumage colors.