The swifts are back. I noticed a group of five yesterday, wheeling and screaming over Marlborough Road in Hillingdon - always a good place to spot them.
I don't know why they like this particular area but my partner tells me that there used to be an old farm there, before they built the council houses, so swifts have probably been nesting there for centuries.What a shame that planners didn't realise this, and build swift nesting places into the roofs of the houses.
I have seen swifts flying into what must be a ventilation space in the loft of one of the houses. Who knows, perhaps a barn that was a good swift home used to stand on that very spot.