Fly Invasion

[SueA]

This morning my garden is full of blue-bottle like flies. They are on the euonymus (which is flowering) & sitting on some of the veg. leaves. I've never seen so many all at once before & I've checked round the garden to see if there are any dead bodies lying around. The weather is quite still & warm today after a few days of cold & gales. Has anyone else noticed this in their garden?

[Alice]

Not this year SueA, but we have had similar outbreaks in the past. Sorry I can't shed any light on the cause. Like you we checked around for dead things but failed to find anything.