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How odd that Michael didn't get to see this
spectacle. Has anybody else tried? It really was an impressive event. Whilst the
timing suggests it as a pre-roosting gathering, I'm pretty sure the birds were
feeding as the flight was all very erratic, no formation flying. Also the birds
were at altitudes from only a couple centimetres above water level (sometimes
drinking from the lake) to very high, only just visible as dots in the sky. On
that basis (and the poor light) it was hard to work out what ratio of the
two species it was. I thought the strong wind was relevant in possibly
blowing insects towards the eastern edge of the lake.
I had 3 White-throated Needletails over my house
this week. This is the second week for my GBS this year. No-one else has
mentioned them on this list (that I have noticed). Is anyone else seeing them
locally so far this year?
Philip
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