Starling Murmurate Over Gretna

GRETNA, SCOTLAND - NOVEMBER 21: Starlings put on a display near the M6 as they gather in murmurations on November 21, 2018 in Gretna, Scotland. It is thought that starlings flock together in large groups for various reasons, such as making it difficult for predators to target a single bird and also keeping them warm. They gather over their autumn roosting site just before dusk and perform their acrobatic whirling motions before setting down for the evening. (Photo by Jeff J Mitchell/Getty Images)