I figured, too, they were after straw for nesting. But they didn't have to make holes for that. Dang birds!
Karen - yeah, maybe they're going for insects or worms just below mulch level?
After one flew off the bed, it landed on my fence and started going at a zip tie I have on there. I guess it may be a mixture of foraging and curiosity.
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Arne
Zone 6A, Northern NJ
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