Song Thrushes in Melbourne

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Subject:	Song Thrushes in Melbourne
From:
Date:	Fri, 20 Jul 2001 16:02:53 +1000

>From memory Song Thrush are in decline in the United Kingdom
where competition from Blackbirds has been studied - I think
they wait for the Thrush to open a snail shell and then pinch
the contents.

Here in Bayside, SE Melbourne, there is a lot of year-to-year
variation in the number of Song Thrush records.

Why I don't know. But I suspect that rats feed on the introduced
garden snails, snipping open the shell at the apex of the
spiral.

Michael Norris
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