Accidental starlings

I've been trying for ages to get a photo of the huge flocks of starlings that swirl and swoop across the sky on their way to roost at Brighton's West and Palace piers. No luck at all until yesterday evening, then it happened purely by accident.

A murmuration of starlings swooped across the sky just as I clicked the shutter to capture the sun going down! I didn't realise the birds were there until I looked at the photos on the computer much later in the evening.