Starling flock (Sturnus vulgaris) at sunset, with Marsh Harrier (Circus aeruginosus) flying beside the flock.

---

Starling flock (Sturnus vulgaris) at sunset, with Marsh Harrier (Circus aeruginosus) flying beside the flock, grouping in the sky caused by presence of predators, with pink sunset colours, RSPB North Warren nature reserve, Suffolk, December 2011

---

Size: 5125px × 3410px
Location: North Warren, Aldeburgh
Photo credit: © Andrew Bailey / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: adult, adults, aeruginosus, anglia, animal, animals, avoiding, behaviour, bird, birds, british, circus, common, dusk, east, england, evening, flight, flocks, flying, group, grouping, harrier, hunt, hunted, marsh, murmuration, murmurations, nature, north, predation, predators, prey, roost, roosting, rspb, starling, starlings, suffolk, sunset, warren, wildlife, winter