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My desk is in a loft office on the second floor of our house. There is a window directly over the garden and when I am sitting here I have views of the hillside and a ponderosa pine. The other day, while diligently working on wedding photos from last weekend, I heard the fluttering sound of wings against the glass. I looked over my shoulder and didn’t see anything and the sound was gone. It repeated a few seconds later. Curious, I walked over to the window and looking down, I saw a Black-headed Grosbeak perched on top of the garden fence.

I backed away from the window while keeping my eyes on it and soon the bird returned and clinging to the siding it looked in the window and then over at a round decorative piece covered with lavender beads.

The bird flew/hopped to the other side of the window and again fluttered at it as if to beat it senseless with its wings?


This behaviour happened several times over the next half hour or so. There’s no ledge so the bird could only hold on to the position for a few seconds at a time.




And then the bird left. The grosbeak must have felt that it had subdued the lavender beads and they were no longer a threat to him. I have seen territorial birds attack windows and mirrors when they see their reflections and perceive them as another bird in their territory but for some reason, this bird was obsessing on the purple beads. What’s up with that?


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