As one of my favourite birds, I always look forward to seeing Swifts around my village (Eye,Suffolk) in summer. So far, there seem to be many fewer than usual. Flocks of 50+ are not unusual, but the maximum count I have seen so far is 15. If repeated nationwide, it would seem a catastrophe has happened to reduce their numbers so much. Is this a local phenomenon or have other birders noticed a similar drop in numbers?