Peter
There does not need to be "objective evidence that the species will
cause damage to native animals or plants or to human health". The
position taken, I feel, should be that if it is not native and should
not be there then get rid of it. Otherwise we just keep letting things
get loose and saying "ahh it's not hurting anything, leave it alone".
Obviously we are unlikely now to eradicate some species such as Mynahs,
Sparrow and Starlings etc let alone Foxes and others but we do not need
to tempt fate by letting more seemingly harmless animals become weeds.
Greg Little
-----Original Message-----
From:
On Behalf Of Peter Marsh
Sent: Thursday, 1 October 2009 6:12 PM
To: birding-aus
Subject: Barbary Dove
Dear Birders,
There are indeed Barbary Dove in the SW suburbs of Adelaide as I saw 2
of them today in Oaklands Road, Somerton Park.
Can someone outline the reason why this species is considered such a
danger as compared with, say Spotted Dove or Laughing Dove which are
both introduced and appear to do little harm (as far as I know). Birds
Australia and the BIGnet group of bird clubs in NSW are both working on
policy guidelines for dealing with what have been called overabundant or
invasive bird species. In each case there needs to be objective evidence
that the species will cause damage to native animals or plants or to
human health before we go running off trapping, shooting, poisoning or
whatever. This evidence can be local or from overseas. In the case of
Canada Geese for instance there is abundant evidence fron the UK and New
Zealand. In the case of the Common Mynah there is much hysteria but
seemingly little scientific evidence of the damaging effect of this
species. By contrast the recent survey in the Capertee and Holly
Parson's work in suburban Sydney show the inverse correlation between
species abundance and Noisy Miner presence but there seems to be little
concern among the public or birders.
Regards
Peter Marsh
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