Bird of prey hunting starlings as they gather together in a huge flock before they go to roost for the night

starling buzzard cumbria murmuration nature flock flight sky starlings wildlife evening background birds bird fly silhouette animal dusk swarm england group sunset many roost flock of birds togetherness black migration flying landscape uk outdoor sturnus vulgaris winter phenomenon natural mass acrobatics twilight landmark formation swooping murmuration of starlings roosting swooping mass spectacle starling flock european starling mass of birds