A few years ago, these birds that migrate here in the spring and summer from southern Africa were common. It was not unusual to see a few on the telegraph wires. Although they are still seen, they seem to be far more localised. We still have plenty of swifts locally despite many nest sites going and I have seen house and sand martins.
I guess the time will come when some decide to over-winter. I think some have tried in the past but succumbed to the lack of insects. As winters get shorter and milder with climate change, I can see some patterns changing.
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