‘Upstream’ is an interesting point. At the
bridge, as platypus-seekers might have noticed, the flow has been south-east.
This might be the effect of the wind on the stagnant water, or the result of
inflow to the lake from the Molonglo backing up into Jerrabomberra Creek,
the lower reaches of which are depleted by evaporation and seepage, and/or
diversion into Kelly Swamp. In other words Kellys is being fed by the
Molonglo.
It does seem as if the arrival of WB and Masked Woodswallows is
now a regular annual rather than periodic event, although probably linked to
the prolonged dry spell. You might recall Leo Joseph’s presentation
in which he showed that on DNA analysis the two species were almost identical,
the difference being the gene (or whatever) that is responsible for the plumage
differences.
From: Berzins, Leo
[
Sent: Thursday, 4 October 2007 8:05 AM
To:
Subject: [canberrabirds] More woodswallows [SEC=UNCLASSIFIED]
At
Jerrabomberra Wetlands this morning a flock of forty or fifty White-browed
Woodswallows and a few Masked Woodswallows were enjoying the early morning
sunshine (and no doubt the respite from yesterday's wind) about 100 metres
upstream from the bridge in a large willow.
Another
highlight was a pair of Chestnut Teal with ten ducklings at Kelly's.
Regards,
Leo.
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