Saw three darting about on thursday, the same woods had quite a lot of insects buzzing about, presume that's their feed. I love the Swallows, they buzz around you when walking across a grassy area with midges. At Bennybeg climbing crag near Crieff, after climbing in the evening, when it's dusky, they can circle around you close by if you blow your breath out and attract the midges.
Seen a few big bumble bees the last few days too.