What makes the rings of holes on tilia?

[paradise]

I meant to get a photo but can't find my phone connector, but a lot of limes have rings of chew marks or insect holes or something around the cambium of branches or stems, sometimes vaguely diamond-shaped holes, and usually going right round in a complete ring. I should probably know what does this because I've seen it so often but I do not know and so consult the all-knowing arbtalk

[Stephen Blair]

woody the woodpecker

[paradise]

Are you sure? It seems strange for a woodpecker to move around the tree in a circle like that.

[ad15]

trying to find a weak spot in the wood..

[David Humphries]

Juveniles practising.

 

 

 

 

 

 

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