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I tend to agree with Ian (below).
I would caution the discussion with a little
recollection. It may help to revisit the event at which McComas Taylor in a
talk to RAOU (maybe 1989?) about the (then in development or new) ACT bird
atlas. He showed with maps how the Fuscous Honeyeater was mainly in the higher
southern parts of the ACT in summer and mainly in the lower northern parts of
the ACT in winter. This appeared to demonstrate a north-south migration. Of
course it does not demonstrate any such thing. This becomes obvious on the
basis that the ACT is not an island. The pattern could equally be explained as
east-west migration or the more likely altitudinal migration, which I think was
what he was actually intending, even though the graphic shown, made it look
like north-south.
Philip
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