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Hi Andrew,
Yes but I'd suggest the odd thing is not
particularly the "hawking insects" but that they take on very much the flight
shape and style of woodswallows for a few seconds. It probably has little or
nothing to do with woodswallows (which otherwise fly quite differently), so it
is not likely to be behavioural mimicry, more like a coincidence. Hard to
describe how, but they just don't move like starlings usually do, when indulging
this behaviour. It is easy to think for a moment, such birds seen not close up,
are woodswallows.
Philip
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