Jenny,
I agree the birds are heading to Little River mouth ... but I would say the
line continues in the same direction inland - at least half the width of the
Geelong Arm (~7km). You can see this on the image at 09:30am. There are images
from the 15-16th June as well. These don't show anything much different but the
northward-moving line is about consistent with the images in the animation.
There appears to be a lot of scatter over the land to the north. This 'noise'
could quite possibly be flocks of other species over the WTP I guess.
I'm still punting for Ibis. The flocks are up to 500m altitude and there are no
doubt huge flocks of ibis in the farmland outside the WTP - often seen circling
high over thermals. The assumption however, is mainly on the basis that ibis
are by far the most abundant flocking bird in the area. I doubt Black Swan
would ever move in such huge numbers in one go.
I wonder whether anyone within the friend's group for Mud Islands has seen this
event at all? I might ask Lynda for more info. It may be coincidence but the
data she sent me are both for days with strong northerly winds. Maybe this is
just enough to create thermals necessary for a mass daily movement in winter.
Interesting eh?
Regards,
Simon.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Simon Mustoe
Tel: +61 (0) 405220830 | Skype simonmustoe | Email
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Date: Sat, 2 Jul 2011 18:00:44 +1000
Subject: Radar Birds
From:
To:
Hi Simon,
I doubt they are ibis because if you lay the radar map over google earth then
you can see that the birds arriving in the vicinity of the Little River mouth
and then angling north up or near to the coast. Also, the birds do not seem to
continue inland, which is what the ibis would do. My bet is Black Swan from
Salt Lake at St Leonards and or Swan Bay.
Also, there are not enough ibis at WTP at the moment to make a trace on the
radar that lasts for 2 hours. There are, however, plenty of Black Swans.
Do 56,000 ibis really breed on or near Mud Island? I never realised there were
so many down that way. Amazing.
cheers
Jenny
On Sat, Jul 2, 2011 at 10:57 AM, Simon Mustoe <> wrote:
Hi,
I've animated the radar images from BOM and done an article on the movement of
birds from Mud Island. It's all on the front page http://bird-o.com/
Lynda from BOM would certainly appreciate comments. I'll make sure she receives
anything left in comments on the article.
Have a nice weekend,
Simon.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Simon Mustoe
Tel: +61 (0) 405220830 | Skype simonmustoe | Email
Visit BIRD-O at http://www.bird-o.com
Follow BIRD-O on Twitter http://www.twitter.com/birdodotcom
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