I have wondered before if it was
an evolutionary thing to create more hollows? Some support for this might
be that bark-chewing birds apparently pay more attention to Manniferas than
other eucalypts – perhaps they pick on them because they are more
susceptible to dropping branches anyway and are therefore easier targets?
Either way, arborists earn a lot
of money erecting galah and corella-proof protection to vulnerable parts of target
trees to prevent this activity.
Julian
From: Judy Corp
[
Sent: 19 July 2010 12:44
To: 'Janet Russell';
Subject: RE: [canberrabirds] Tree damage caused by Galahs
Hi
Yes we had a large
eucalypt and the galahs used to bark it regularly. I was worried they would
kill the tree and perhaps they did contribute to its demise.
Judy
From: Janet Russell
[
Sent: Monday, 19 July 2010 11:33 AM
To:
Subject: [canberrabirds] Tree damage caused by Galahs
My husband saw a Galah cause the
damage shown on the gum tree on enclosed photo. The tree is in a neighbour's
garden. It appears to have been caused by only one bird and the tree is a
brittle gum (Eucalyptus mannifera). The main damage extends a fair way round
the tree both sides but I could see that it did not extend right round
it. Has anyone seen Galahs or other birds doing this?
Janet Russell
Aranda
