Hi Chris, I'm not convinced that Pink Robins make the crossing, in contrast
to Flame Robins. HANZAB says there is no evidence for such crossings, and
Tasmanian birds are subspecifically distinct (slightly longer-winged).
In Victoria (as you know) adult male Pink Robins mainly remain all year in
their breeding territories in cool temperate rainforest or wet mountain
forests with similar structure, along with some brown birds (perhaps mainly
adult females), although they tend to forage in more open situations
(including log landings). A few adult males and lots of brown birds move
into drier habitats for the winter, in foothill forests and in shady
multi-stemmed habitats such as coastal teatree thickets, also in
box-ironbark & regrowth river red gum, etc.
It's a similar story in Tasmania. Reporting rates go up in winter in both
states because birds are more widely dispersed and found in more accessible
places. There are records from Bass Strait islands (King & Flinders),
apparently referring to resident populations of the Tasmanian subspecies. I
don't know of any reports of falls of Pink Robins on Bass Strait islands or
the Victorian coast, whereas such events are quite often reported for Flame
Robins.
I hope this helps a bit. I wouldn't be surprised if occasional Pink Robins
crossed the strait but it seems there's no generally accepted evidence for
it and I suspect it's the exception not the rule. It may be worth checking
various reports of bird observations on small Bass Strait islands.
I look forward to hearing more about the boobooks and the Gould's wattled
bats.
Cheers, Richard.
Richard Loyn
Eco Insights
4 Roderick Close
Viewbank VIC 3084
ph: 03-9459 4268
mob: 0488-77 66 78
-----Original Message-----
From:
On Behalf Of Chris Corben
Sent: Wednesday, 12 June 2013 2:46 PM
To:
Subject: Possible Tasmanian Morepork in Victoria
Hi all
On a tangent, but Paul Brooks questioned that Pink Robins cross Bass
Straight, which made me realise I might have been mixing up stories between
Flame and Pink and various speculations based on the occurrence of Pinks in
silly places at times. Does anyone know? Does Pink Robin migrate across the
Straight?
Cheers, Chris.
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