Birdhouses at the Great Swamp Outdoor Education Center, by the power lines.

I guess these are for wrens?

And I’m really not sure what the metal sleeves around the posts are about. Any birding fans familiar with this?

Edit: Careful reader Gerald suggests they’re supposed to discourage animals from climbing up the posts. Makes sense.

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One Comment to “Birdhouses”

  1. I think the metal sleeves are to discourage animal climbers.

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