Sarah Church shot this fabulous video of starlings at Brierly, near Leominster.

The hypnotic patterns made by thousands of birds swooping in unison is called a murmuration.

According to the RSPB, grouping together offers safety in numbers. Predators such as peregrine falcons find it hard to pick out one bird in a flock of thousands.

They also gather to keep warm at night and to exchange information about things such as good feeding areas.