There was a recent ASCAList discussion on this. Here in N.A. we have
Sapsuckers (dunno if various woodpecker species do it) that make the
horizontal rows of holes. I may be mixing threads and critters, but I think
there was some mention that if the sap ferments and they come back for a
drink they may get drunk.
SC
----- Original Message -----
From: Peter Thurman
To: UK Tree Care
Sent: Thursday, June 01, 2006 6:28 AM
Subject: RE: sap-sucking woodpeckers
Has anyone noticed fairly manic behaviour by Greater Spotted Woodpeckers
making many regimented horizontal lines of cuts into tree trunks?
The internet and literature suggest they are sap-sucking rather than looking
for insects.
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