Yesterday, I “thought” I saw a Bluebird–but uncertain. I put mealworms in the feeder. Today (praise the Lord), I saw and photographed my visitor (telephoto lens, through the window).
Perfect gift (I was leaving for a cruise.)
Wikipedia has a lot to say about Bluebird of Happiness.
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My apology to the Robin (lol). There are dozens of Robins in the field adjacent to my yard. I’m guessing the soggy wet earth forced earthworms near the surface so a feast for the birds.