This one was photgraphed near Conicaval today.They are daytime flyers covering around 320km (200miles) each day, and roost in large flocks in their traditional stop over spots in reed-beds at night. Luckily the swallow hasn't got to fatten up before they set off as they feed on the wing, catching flying insects.
(Thanks to the RSPB for the info).
Oh - and here's a flying insect I found in my garden. No idea what it's called!