The mason bees are back

Each year, a few mason bees  set up home in the fence posts here. I think that they are Osmia rufa (the red mason bee, also known as Osmia bicornis).

Mason bee  in fence post
Mason bee in fence post

They’re very fickle about which holes to choose for their homes, visiting all knot, nail and screw holes before selecting the one to use. Invariably they use the same few holes in the same few fence posts year after year.

Mason bee checking a nail hole out for size
Mason bee checking a nail hole out for size
The top hole is too small, but the bottom hole's just right
The top hole is too small, but the bottom hole’s just right

Once they’ve moved in, they will sit for hours in the mouthway of the hole, seemingly doing nothing much at all. They’ll be around for a few weeks, and then as suddenly as they arrived, they’re gone.

Another hole, another bee :)
Another hole, another bee 🙂
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2 thoughts on “The mason bees are back”

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