Gembrook, Victoria. (75k west of Melbourne)
On Sunday 28th October I saw a flock of woodswallows, most probably
White-browed or possibly Dusky, circling very high over my house. I have
recorded White-browed here once before a long time ago.
The area is tall, closed eucalypt forest with open farmland not far away
It was about 30 minutes before sunset and there was a storm approaching,
lots of heavy dark clouds and very little wind. They were behaving as I
would expect to see swifts behave in the conditions, circling very high over
the trees which are about 60 meters tall (I think!) and some of the birds
were at least that high again, some so high I could barely see them with the
naked eye in the poor light. At a conservative guess there were about 40
that I could see, but there could have been many, many more out of my field
of view behind the tree tops
I was unable to positively identify the species but they all appeared
uniformly dark underneath in the poor light and were calling constantly with
a gentle 'chup, chup' sort of sound.
Is this a know bebaviour of Woodswallow species?
Val
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