Day 026/18. Starling Murmoration

Just outside Romsey, UK tonight.
It's basically a mass aerial stunt - thousands of starlings all swooping and diving in unison. It's completely breathtaking to witness.
We think that starlings do it for many reasons. Grouping together offers safety in numbers – predators such as peregrine falcons find it hard to target one bird in the middle of a hypnotising flock of thousands.
They gather over their roosting site, and perform their wheeling stunts before they roost for the night.