Within colonies, fieldfares mob and defecate on approaching predators, shown experimentally to reduce predation levels. In autumn it attracts thrushes, fieldfares and redwings which feed on the hawthorn berries. Fieldfares are birds which may nest either solitarily or in colonies. Fieldfares often nest in small colonies, possibly for protection from predators. Fieldfares usually nest in close proximity to others of the same species.