birding-aus

Re: Grey Butcherbirds around Melbourne.

To: Ian May <>
Subject: Re: Grey Butcherbirds around Melbourne.
From: Reg Clark <>
Date: Tue, 30 Mar 2004 17:13:44 +1000
Hello Ian

The local population of Superb Blue Wrens disappeared when the last of the Blackberries were bulldozed. The small families of Variegated Fairy Wrens persisted in the sandstone woodland areas but they seem to have diminished to the extent that I have only seen two of them in about twelve months .No doubt the irruption of Butchbirds this summer would have contributed to to this situation in addition to the usual predators.It is a great shame.......they have left a gap!!!.


Reg
St. Ives.



Ian May wrote:

g'Day all

Could it be that the local decline of Blue Wrens to which Michael refers
is a likely consequence of other factors rather than just the presence
of Grey Buthcherbirds.  An alternative explanation for the recent
decline of Blue Wrens in some areas is the removal of shelter plants
such as blackberries and other similarly structured exotics that were
providing protection to small birds.

If the definition of a weed is an undesirable plant then perhaps when
considering the protection and conservation of birds, a weed may not
always be a weed when such a plant is growing in the right place.


Regards


Ian May





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