Earlier this afternoon the sky outside our house was filled by a huge flock of gulls. From what we could see they were all black headed gulls, probably with quite a range of ages but that was a little difficult to tell from down here.
We've no idea where they all came from as there must have been hundreds of them circling around the sky at both the front and back of the house. We normally have a fair few swifts up there this time of year but they all seemed to disappear while the gull invasion was in full effect. Even the usually brazen starlings made themselves scarce.
After about half an hour they'd all but moved on - love to know why they visited, it was quite spectacular.